Question

Minthly incone of A and B is in the ratio 5:6 and monthly Expenditure is in the ratio 3:4 if per month they get Rs. 1800 and 1600 respectvely ,then find monthly income of B.

Answer 1

for B he spends rs1600 on his salary in expenditure in the ratio of 4x.
therefore 4x=1600
x=400
B's salary is in the ratio of 6x.
6*400=2400
therefore ₹2400 is the monthly income of B.
so for A 3y=1800
then we get y=600 in expenditure
A's monthly income 5y=3000

Answer 2

income of A and B = 5x and 6x and expenses of A and B = 3y and 4y
?Then,saving of A = 5x-3y =1800___?(1)
saving of B=6x-4y =1600 ___?(2)
by solving questions (1)and(2)
y=1400
?monthly income of B = Expenses of B+ saving of B
=4y+1600=4(1400)+1600=Rs.7200


I hope,it help you.