Question

The expenses on rice, fish and oil of a family are in the ratio 12:17:3. The price of these
articles are increased by 20%, 30% and 50% respectively. The total expenses of family on
these articles are increased by what %
​

Answer 1

solution;

.Let the initial expenses on rice,

fish and oil be 12x, 17x and

3x respectively.

Total expenditure

= (12x + 17x + 3x)

= 32 x

After increase,

Expenditure on rice

120/100*12x=14.4x

Expenditure on fish

130/100*17x=22.1x

Expenditure on fish

150/100*3x=4.45x

Total expenditure

= (14.4 x + 22.1x + 4.5 x)

= 41 x

Increase = (41x – 32x)

= 9x

Percentage increase =224/8%