model 6 consumption & remaining Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

If the price of tea is increased by 20%, by how much per cent the consumption of tea be reduced so that there is no increase in the expenditure on it ?

a) 8$1/3$%

b) 20%

c) 83$1/3$%

d) 16$2/3$%

Question : 2

The price of petrol is increased by 25%. By how much per cent a car owner should reduce his consumption of petrol so that the expenditure on petrol would not be increased ?

a) 20%

b) 30%

c) 25%

d) 50%

Question : 3

If the price of rice be raised by 25%, the percent by which a house-holder must reduce his consumption of rice so as not to increase his expenditure on rice is

a) 20%

b) 25.75%

c) 225%

d) 25%

Question : 4

If the price of a commodity is increased by 50%, by what fraction must its consumption be reduced so as to keep the same expenditure on its consumption ?

a) $2/3$

b) $1/3$

c) $1/4$

d) $1/2$

Question : 5

Water tax is increased by 20% but its consumption is decreased by 20%. Then the increase or decrease in the expenditure of the money is

a) 4% increase

b) 4% decrease

c) 5% decrease

d) No change