Question

in a class the number of girls, teacher,boys are in the ratio 3:1:4 for a particular party donation of each boy, girl, teacher are in the ratio 6:5:10. the difference between the total amount donated by teachers and that by boys is 560 what is the total amount donated by girls​

Answer 1

Answer:

DONATION BY TEACHERS IS = 3X* 6Y

BY BOYS= X*5Y

TEACHERS - BOYS =560

18XY-5XY=560

13XY=560

XY=

GIRLS=4X*10Y=40XY

DONATION = (40*560)/13

=RUPEES 1763.076

Answer 2

Answer:Ignore ratio of number of boys girls and teachers. It is helpful only when you need to find out something about 1 girl or boy.

So

Sum of ratios =21

10/21x - 6/21x=560. (Given)

4/21x=560

x=2940

Contribution of girls=5/21x=5/21*2940

=700