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15 Sep 2018, 06:04
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
82% (01:45) correct
18%
(02:07)
wrong
based on 250
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The ratio of boys and girls in a class was 11:17. If 7 boys and 3 girls were added to the class, which of the following can be the new total number of students in the class
A. 28
B. 35
C. 59
D. 94
E. 119
Source: Experts Global
A. 28
B. 35
C. 59
D. 94
E. 119
Source: Experts Global
15 Sep 2018, 07:51
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Initial condition
Boys. Girls
11x. 17x
Final condition
Boys. Girls
11x+7. 17x +3
New total = 11x+7 +17x + 3= 28x +10
X ki value put kro fraaand aur option check kro
Sent from my XT1686 using GMAT Club Forum mobile app
Boys. Girls
11x. 17x
Final condition
Boys. Girls
11x+7. 17x +3
New total = 11x+7 +17x + 3= 28x +10
X ki value put kro fraaand aur option check kro
Sent from my XT1686 using GMAT Club Forum mobile app
15 Sep 2018, 07:53
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Bookmarks
B:G=11x:17x
Total (B+G) =28x
New Total = B+7 + G+3 = 28x+10
A. 28 = Eliminate because it is old total
B. 35 = Eliminate because the new total has to be atleast 38 (when x = 1)
Solve for x using the equation 28x+10 = Answer choice, where x has to be an integer as number of boys/girls cannot be a fraction
C. 59 -> x = 1.75
D. 94 -> x = 3
E. 119 -> x = 3.9
Answer: D) 94
Total (B+G) =28x
New Total = B+7 + G+3 = 28x+10
A. 28 = Eliminate because it is old total
B. 35 = Eliminate because the new total has to be atleast 38 (when x = 1)
Solve for x using the equation 28x+10 = Answer choice, where x has to be an integer as number of boys/girls cannot be a fraction
C. 59 -> x = 1.75
D. 94 -> x = 3
E. 119 -> x = 3.9
Answer: D) 94
