Question

The monthly pocket money of Nita and Rani are in the ratio 5:7. Their expenditure are in the ratio 3:5. If each saves 80/- every moth find their pocket money.

Answer 1

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Answer 2

Answer:

Nita's pockey money is 200rs and Rani's Pocket money is 280rs.

Step-by-step explanation:

Nita's pocket money = 5x

Rani's Pocket money= 7x

Now, Nita's expenditure= 3y and Rani's = 5y

A/Q.. Equation 1

5x-3y= 80

Equation 2

7x-5y=80

now, Equation 1

5(5x-3y=80)

25x-15y=400

Equation 2

3(7x-5y=80)

21x-15y= 240

At last, Subtract both the equations...

25x-21x + 15y-15y = 400-240

4x=160

x=40

Nita's pocket money = 5×40= 200rs

Rani's Pocket money= 7×40=280 rs