Question
The price of wheat per kilogram has decreased by 12%. As
a result, a person can now purchase 75 kg of wheat for the same amount of money they previously spent. How many kilograms of wheat could the person buy before the price reduction?Solution
Let the per kg cost price of wheat initially be Rs. '100x'. Let the person buys 'Q' kg of wheat before reduction in price and Rs. 'T' be the total price paid by the person for buying the required quantity of wheat. Total price = cost price (Per kg) X Quantity ATQ,Total price = 100x X Q = (0.88 X 100x) X 75 Or, 'Q' = (88/100) X 75 = (22/25) X 75 So, 'Q' = 66 Therefore, the person could buy 66 kg of wheat earlier.
In a lottery, there are 4 prizes and 20 blanks. A lottery is drawn at random. What is the probability of getting a prize?
A bag contains 3 Green and 9 Red balls. One ball is drawn at random. What is the probability that the ball drawn is Red?
- The ratio of sugar to flour packets in a store is 6:7. If 18 more packets of each are stocked, the ratio becomes 4:5. Find the original number of flour pac...
22 defective pens are accidentally mixed with 136 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen i...
A box contains 8 red, 5 green, and 7 blue balls. Two balls are drawn at random without replacement. What is the probability that both balls drawn are of...
A bag contains 4 red, 5 blue and 6 green balls. Two balls are drawn at random without replacement. What is the probability that the two balls are of dif...
Given that E and F are events such that P(E) = 0.8, P(F) = 0.4 and P(E∩ F) = 0.2. Find P(F|E).
A box contains only three colors of balls- red, green and blue. What is the minimum number of balls that should be picked from the box to ensure that at...
The names of 15 students from section A, 10 students from section B and 15 students from section C were selected. The age of all the 40 students was dif...
A game consists of tossing three coins once and then rolling two dice. Find the probability of getting exactly two heads in the coin toss and a sum equa...
