Question

10% of a = 15% of b=20% of c if sum of their income is 7800 than b's income

Answer 1

Answer:

2400

Step-by-step explanation:

(10/100)a = (15/100)b = (20/100)c

a/10 = 3b/20 = c/5

a = 3b/2

c = 3b/4

a + b + c = 7800

3b/2 + b + 3b/4 =7800

6b + 4b + 3b = 7800×4

13b = 7800*4

b = 600*4

b = 2400