Question

The income of a, b and c are in the ratio 3 : 7 : 4 and their expenses in the ratio 4 : 3 : 5. If a saves rs.300 out of an income of rs. 2,400, the savings of b and c are:

Answer 1

Answer:

b saving = 4025

c saving =  575

Step-by-step explanation:

Let say income = x

Saving = y

3:7:4 income means

3x/13 = a , 7x/13=b . 4x/13= c

4:3:5 expenses means

4y/13 = a ,  3y/13=b , 5y/13 = c

a income = 2400 given

a saving = 300 so a expense = 2400-300 = 2100

3x/13 = 2400

x = 800*13 = 10400

4y/13 = 2100

y = 2100*13/4 = 6825

b income = 7x/13 = 7*10400/13 = 5600

b expense = 3y/13 = 3*6825/13 = 1575

b saving = 5600-1575 = 4025

c income = 4x/13 = 4*10400/13 =  3200

c expense = 5y/13 = 5*6825/13 =  2625

c saving = 3200-2625 = 575