How Many Girls are There? If

280 oranges are divided amongst 50 girls and boys so that each boy gets 5 oranges but each girl gets 7. How many girls are there?

  1. 35
  2. 25
  3. 15
  4. 5
Monis Rasool Professor Asked on 10th June 2015 in Maths.
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1 Answer(s)

Answer: (3) 15
Explanation:-
Let be the number of boys = X
Then, the number of girls = 50 – X

According to the question,
5X + 7(50 – X) = 280
5X + 350 – 7X  = 280
– 2X = 280 – 350
2X = 70
X = 70/2 = 35
Thus, the number of boys is 35 and number of girls is 50 – 35 = 15

Hence, the number of girl is 15.

Anurag Mishra Professor Answered on 10th June 2015.
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