Quantitative Aptitude - Arithmetic Ability Questions

In a mixture 25 liters, the ratio of milk and water is 4:1. How many liters of milk must be added to make the ratio 16:1?

The simple interest on a sum is 7/8 of the principal for 5 years. What is the rate (in percentage) of interest per annum?

A sum becomes 1.69 times of itself in 2 years when invested at compound interest. What is the per annum rate of interest (in percentage)?

Which of the following is the correct option for the congruency of the two triangles ABC and PQR as per the SAS congruency criterion?

Which of the following numbers is not a prime number?

The perimeter and the breadth of a rectangle are 82 cm and 20 cm respectively. Calculate the length of its diagonal (in cm).

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by aLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If Tan A = 15/8 and Tan B = 7/24, then Tan (A - B) = ?