A. 10 20/23 %
B. 13 1/23 %
C. 16 2/3 %
D. 15 %
Explanation:
Reduction % in consumption
= {r/(100+r) ×100} % =(15/115 × 100)%
= 300/23 % = 13 1/23 %
Related Mcqs:
- The price of petrol is increased by 25 %. By how much percent a car owner should reduce his consumption of petrol. So that expenditure on petrol would not be increased?
A. 25 %
B. 30 %
C. 50 %
D. 20 % - If the price has fallen by 10% what percent of its consumption be: increased so that the expenditure may be the same as before?
A. 11%
B. 10%
C. 11 1/9 %
D. 9 1/11 % - If the price of petral is increased by 20% by what percentage should the consumption be decreased by the consumer if the expenditure on petrel remains unchanged?
A. 16 2/3%
B. 6 2/3%
C. 8%
D. 15% - If cost of sugar increases by 25%. How much percent consumption of sugar should be decreased in order to keep expenditure fixed?
A. 10%
B. 15%
C. 20%
D. 25%
E. None - In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?
A. Rs.5000
B. Rs.4600
C. Rs.5400
D. Rs.2300 - If the price of gold increases by 50%, find by how much the quantity of ornaments must be reduced, so that the expenditure may remain the same as before?
A. 27 2/23 %
B. 33 1/3 %
C. 30%
D. 19% - 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. No change
B. 5 % decrease
C. 4 % increase
D. 4 % decrease - The price of an article has been reduced by 25%. In order to restore the original price the new price must be increased by________?
A. 33 1/3 %
B. 9 1/11 %
C. 11 1/9 %
D. 66 2/3 %
E. None - The price of an article has been reduced by 25 %. In order to restore the original price, the new price must be increased by:________?
A. 33 1/3 %
B. 11 1/9 %
C. 9 1/11 %
D. 66 2/3 % - The price of cooking oil has increased by 25 %. The percentage of reduction that a farming should effect in the use of cooking oil so as not to increase the expenditure on this account is________?
A. 15 %
B. 20 %
C. 25%
D. 30%
