Question

divide 4260 rupees in 3 parts proportional to 5/2:5/3:7/4

Answer 1

Let the proportion be 5x/2, 5x/3 and 7x/4
A/q
5x/2 +5x/3 +7x/4 = 4260
⇒(30x +20x +21x)/12 = 4260
⇒71x/12 = 4260
⇒x = 60×12 = 720
so the proportion will be Rs 1800, Rs 1200 and Rs 1260 respectively.

Answer 2

4260 = 5x/2 + 5x/3 + 7x/4
4260 = ( 30x + 20x + 21x )/12
4260×12 = 71x
x = 720
5x/2 = 1800
5x/3 = 1200
7x/4 = 1260