Question

A's income is 75% of the income of B. B's income is 80% of the income of C. if A's monthly income is Rs 12900. find the monthly incomes of B and C.?

Answer please​

Answer 1

Answer:

B's income = Rs 17200

C's income = Rs 21500

Step-by-step explanation:

let monthly income of C = x

.... .... .... .... B = x×80% = 4x/5

.... .... .... .... A = 4x/5×75%

= 4x/5×3/4

= 3x/5

it is given that A's monthly income is =

12900

so, we can write as,

3x/5 = 12900

x = 12900×5/3

x = 21500

so, C's income = Rs 21500 ....ans.

and B's income = 4(21500)/5

= Rs 17200 ....ans.

Answer 2

Given : Income of A = Rs 12900

            Income of B = 80 % of income of C

            Income of A = 75 % of income of B

To find : Income of B and C

Solution :

Let income of  C is y

then,

        income of B = 80% of y

        this can also written as  = $\frac{4y}{5}$

        income of A = 75 % of B

                             = 75 % × $\frac{4y}{5}$

                             = $\frac{3}{4}$ × $\frac{4y}{5}$

                             = $\frac{3y}{5}$

        From given data ⇒ $\frac{3y}{5}$ = 12900

                                         y = 21500

Hence, Income of C is Rs 21500

Income of B = $\frac{4}{5}$ × 21500 ⇒ 17200

So, Income of B = Rs 17200

#SPJ2