q: When the price of sugar was increased by 32%, a family reduced its consumption in such a way that the expenditure on sugar was only 10% more than before. If 30 kg were consumed per month before, find the new monthly consumption.
Options:
(A) 20 kg
(B) 25 kg
(C) 30 kg
(D) 35 kg
(E) None of these
a: OK... Since, expenditure = price consumption
110% of 30 = 132100 new consumption
110100 30 = 132100 new consumption
New consumption = 25 kg
The answer is (B).

q: The speed of a car is 80 km in the first hour and 60 km in the second hour. What is the average speed of the car?
Options:
(A) 70 kmph
(B) 92 kmph
(C) 75 kmph
(D) 65 kmph
(E) 77 kmph
a: OK... S = (80 + 60)/2 = 70 kmph
The answer is (A).

q: Elena's bread recipe calls for 3 ounces of butter for each 4 cups of flour used. She needs to make 4 times the original recipe. If 12 ounces of butter is used, then how many cups of flour are needed?
Options:
(A) 1
(B) 4
(C) 9
(D) 13
(E) 16
a:
OK... Number of cups flour needed for 3 ounces of butter = 4
Number of cups flour needed for 1 ounce of butter = 4/3
Number of cups flour needed for 12 ounces of butter = 4/3 * 12 = 16
The answer is (E).