Question

9. A boy purchased some balloons at 3 for 5 and sold them at 5 for 12. Thus, he gained?
143 in all
How many balloons did he purchase​

Answer 1

$Question:$

9. A boy purchased some balloons at 3 for 5 and sold them at 5 for 12. Thus, he gained?143 in all How many balloons did he purchase

$Answer :$

Let the number of eggs purchased be x.

Given: C.P of 3 eggs= Rs 5

⇒C.P of x eggs= Rs

5/3x

and S.P of 5 eggs= Rs 12.

so, S.P of x eggs = Rs

12/5x

Now profit = S.P - C.P

⇒143 = 12x/5-5/3x

⇒143 = 36x-25x/15 = 11/15x

⇒143×15/11 = 195

Hence the man purchased 195 eggs.