The diagram displays the proportions of households using various resid

Question

https://gmatclub.com/forum/download/file.php?mode=view&id=60104 The diagram displays the proportions of households using various residential heating sources in the entire United States and in only the Midwest region (within the US) as recorded by the EIA Residential Energy Consumption Survey (RECS). Included in the survey are 113.6 million US households, of which 25.9 million are located in the 12 Midwestern states (IL, IN, IA, KS, MI, MN, MO, NE, ND, OH, SD, and WI). Fill each blank using the drop-down menu to create the most accurate statement on the basis of the information provided. 1. The number of households in the Midwest that do not use electricity for heating is approximately GRAPH_1_PLACEHOLDER of the number of households in the US that use electricity for heating. 2. In the Midwest region, the average number of households using either propane/LPG or natural gas for heating is approximately GRAPH_2_PLACEHOLDER million per state. 2.jpg

Sajjad1994 · Accepted Answer

Official Explanation

Statement 1:    \frac{1}{2}  . Start by reviewing the answer choices. The questions asks:  “The number of households in the Midwest that do not use electricity for heating is approximately _______ of the number of households in the US that use electricity.”

Translate that statement into math:

(Midwest households that do NOT use electricity) ÷ (US households that DO use electricity)

Start with the number of Midwest households that do NOT use electricity. First, find the fraction of Midwest households that fit this qualification. Rather than add up all of the NON-electricity categories, take the electricity percent (18%) and subtract that from 100% to get 100% – 18% = 82%. Now, to find the actual number of households, find 82% of the total number of households, which is 25.9 million. Use the on-screen calculator: 0.82(25.9) = 21.24 million Midwest households do NOT use electricity.

Now do the same thing for the number of US households that DO use electricity. The chart indicates that 35% of US households fit this qualification. To find the actual number of households, find 35% of the total (113.6 million) = 0.35(113.6) = 39.76 million US households that DO use electricity.

Finally, plug these values into the desired fraction: 21.24/39.76 = 0.53 ≈  \frac{1}{2}.

Statement 2:  1.7.   This question asks:  “In the Midwest region, the average number of households using either propane/LPG or natural gas for heating is approximately _______ thousand per state.”

First, find the total number of Midwest households that use either propane or natural gas. Then, divide that by the number of states in the region (12 states).
8% of Midwest households use propane and 69% use natural gas, so 8 + 69 = 77% of households. The total number of Midwest households is 25.9 million. Calculate 77% of the total:

(0.77)(25.9) = 19.94 million households. (Careful! This value is in the answers, but you’re not quite done yet.)

Divide that number by 12 states to get the per state figure: 19.94/12 = 1.7 million households.

kntombat · Answer

Is the answer to both the questions B and B?

Sumi1010 · Answer

Included in the survey are 113.6 million US households, of which 25.9 million are located in the 12 Midwestern states (IL, IN, IA, KS, MI, MN, MO, NE, ND, OH, SD, and WI).

1. The number of households in the Midwest that do not use electricity for heating is approximately___________of the number of households in the US that use electricity for heating.

The number of households in the Midwest that  do not use electricity  for heating = (100-18)% of 25.9 million i.e. 21.238 million.
The number of households in the US that use electricity for heating = 35% of 113.6 million i.e. 39.76 million
Thus, 
21.238 million/ 39.76 million = 0.534
That's closer to 1/2

B. 1/2

2. In the Midwest region, the average number of households using either propane/LPG or natural gas for heating is approximately___________million per state.

The number of households in the Midwest that use either propane/LPG or natural gas for heating : (69 + 8)% of 25.9 million i.e. 19.943 million.
Thus, the average number of households using either propane/LPG or natural gas for heating per state = 19.943/(total number of states = 12) = 1.66 million
That's closer to 1.7 million.

B. 1.7

rocky620 · Answer

Kindly refer the image below for details:

1. The number of households in the Midwest that do not use electricity for heating is approximately___________of the number of households in the US that use electricity for heating.

# of households in the Midwest that do not use electricity   = Total - # of households in the Midwest that use electricity = 25.9 - 4.7 = 21.2 (mn)
  # of households in the US that use electricity   = 39.8 (mn)

\frac{# of households in the Midwest that do not use electricity}{# of households in the US that use electricity}  =  \frac{21.2}{39.8}  ~ 53% or  \frac{1}{2}

A. 1/4
  B. 1/2  
C. 2/3
D. 3/2
E. 5/3

2. In the Midwest region, the average number of households using either propane/LPG or natural gas for heating is approximately___________million per state.

As there are 12 states in Midwest region.
The average # of households using either propane/LPG or natural gas for heating =  \frac{17.9+2.1}{12}  =  \frac{20}{12}  = 1.66 (mn) ~ 1.7

A. 0.7
  B. 1.7  
C. 8.5
D. 19.9

IMO Option B for Both

Deepakjhamb · Answer

1. The number of households in the Midwest that do not use electricity for heating is approximately___________of the number of households in the US that use electricity for heating.

A. 1/4
B. 1/2
C. 2/3
D. 3/2
E. 5/3

solution :

not elctricity in midwest = 82/100 * 25.9* 10^6

electricity in US = 35/100 *113.6 *10^6

So q is that not electricity in midwest = k* electricity in US

so k = not electricity in midwest /electricity in US
 K =(82* 25.9 * 10^4)/(35* 113.6 * 10^4)
K = 2123.2/3976 =.534

So K is approximately = 1/2 as the closest

so answer is b) 1/2

2. In the Midwest region, the average number of households using either propane/LPG or natural gas for heating is approximately___________million per state.

A. 0.7
B. 1.7
C. 8.5
D. 19.9

SOLUTION: households in midwest using propane /lpg or natural gas = 69%+8% = 77%

so number in midwest of households using propane /lpg or natural gas = 77/100 * 25.9 * 10^6

nos of states in midwest = 12

so avg households using propane /lpg or natural gas per state =( 77 * 25.9 * 10^6) / (100*12)

so avg households using propane /lpg or natural gas per state = 1994.3 /1200 * 10^6 = 1.66 * 10^6

so avg households using propane /lpg or natural gas per state = 1.66 M which is approximately more closer to 1.7 M

SO Answer is b) 1.7

TarunKumar1234 · Answer

1. The number of households in the Midwest that do not use electricity for heating is approximately___________of the number of households in the US that use electricity for heating.

For Midwest , do not use electricity for heating = 100- 18= 82%, Nos. of householders do not use electricity for heating = 25.9 * 82% = 21.238 million

For US , do not use electricity for heating = 100- 35= 65%, Nos. of householders do not use electricity for heating = 113.6 * 65% = 73.84 million

Ratio = 21.238/73.84 =0.28 ~1/4

A. 1/4 - Correct
B. 1/2
C. 2/3
D. 3/2
E. 5/3

2. In the Midwest region, the average number of households using either propane/LPG or natural gas for heating is approximately___________million per state.

Midwest people using propane/LPG or natural gas = 8+69= 77%, No. of people using propane/LPG or natural gas= 25.9 *77% = 19.943 million

Per state people using propane/LPG or natural gas= 19.943/12= 1.66 million

A. 0.7
 B. 1.7 - Correct
C. 8.5
D. 19.9

Sajjad1994 · Answer

This is a medium level difficulty question, OA is option B for both of the questions. Everyone did well except one.

Official explanation will be posted soon.

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