Math MCQ Part-13

In a 56 litres mixture of milk and water, the ratio of milk to water is 5:2. In order to make the ratio of milk to water 7:2, some quantity of milk is to be added to the mixture. The quantity of the milk present in the new mixture wil be :

If the HCF of two numbers is 8, then which of the following can NEVER be their LCM ?

A sum invested at compound interest amount to Rs. 7,800 in 3 years and Rs. 11,232 in 5 years. What is the rate percent ?

A person sells an article at 10% below its cost price. Had he sold it for Rs. 332 more, he would have made a profit of 20%. What is the original selling price (in Rs.) of the article ?

The marked price of a chair is Rs. 2,400, which is 20% above the cost price. If the chair is sold at a discount of 10% on marked price, what is the profit percentage ?

P and g together can do a work in 12 days. P alone can do the same work in l8 days. In how many days can alone complete two-third part of the same work ?

The average age of a group is increased by 6 years when a person whose age is 24 years was replaced by a person whose age is 66. Find the number of persons in the group.

The ratio of the investments of A and B in a business is 7:5, and the ratio of their prof- its at the end of a year is 2: 5. If A invested the money for 6 months, then for how much tỉme (in months) has B invested his money ?

Find the number that is as much greater than 49 as is less than 95.

The population of village has been continuously increasing at the rate of 10% per year. If its present population is 54,450, what was it two years ago ?