A homeowner installs solar panels on both the east and west sides of

Question

A homeowner installs solar panels on both the east and west sides of their roof. 45 percent of the total energy generated by the panels comes from the east side, while the remaining 55 percent comes from the west side. The panels are connected to two separate battery banks, one for each side and all battery banks store energy at the same rate and over the same period.

Select for  East Side  the amount of energy stored in kWh in the East Side Battery Bank and select for  West Side  the amount of energy stored in kWh in the West Side Battery Bank that would be jointly consistent with the given information. Make only two selections, one in each column.

Bunuel · Accepted Answer

Official Solution:

The energy stored in the east side battery bank must be 45% of the total, while the energy stored in the west side battery bank must be 55% of the total.
 
This corresponds to a ratio of 45:55, which simplifies to 9:11.
 
Among the given values, only the pair 9 kWh for the east side and 11 kWh for the west side maintains this ratio.

Correct answer:

East Side  "9"

West Side  "11"

SatvikVedala · Answer

East Side Energy Supply is 45% of Total Energy

West Side Energy Supply is 55% of Total Energy

Given, battery banks store energy at the same rate and over the same period.

So kWh1:kWh2 = 45:55 => 9:11

So answer is 9kWh & 11 kWh

catinabox · Answer

This is the correct explanantion!

catinabox · Answer

Official Explanation: 
 Let the total energy stored by both battery banks be E kWh .
 
 The east side battery bank stores  45%  of the total energy: Energy stored by the east side=0.45E 
 The west side battery bank stores  55%  of the total energy: Energy stored by the west side=0.55E 
 We are asked to select two values that are consistent with the 45%-55% ratio. To simplify, the ratio must be 45:55 or 9:11. Let's check the given values and find which pairs maintain this ratio. Only 1 pair matches this ratio: 
 If the east side battery stores  9 kWh , the west side should store:

9×55/45=11 kWh. So, the pair is  9 kWh for the east side  and  11 kWh for the west side .

A homeowner installs solar panels on both the east and west sides of

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Two-part Analysis (TPA) Questions

A homeowner installs solar panels on both the east and west sides of

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards