Fredrick after spending 20% of his monthly salary in buying electronic goods and 10% of the monthly salary in repair work of furniture, invested 30% of the remaining amount in fixed deposits. If he was left with INR 18,963/-, how much is his monthly salary ?

B is 8 years elder to A and B is also 8 years younger to C. 12 years hence, the respective ratio between the ages of A and C will be 5 : 9. What is the sum of present ages of A, B and C

√230÷2.017+58.794=?

Three years ago, Raj’s age was equal to the sum of the present ages of his one son and one daughter. Three years ago, the respective ratio between the ages of his daughter and his son that time was 12;13. If Raj’s wife is 5 years younger to him and her present age is twice the present age of their daughter. What is the present age of their son ? (in years)

(12.5×14) ÷ 20 + 41.25 = ?³÷2.5

5, 4, 6, 15, 56, 285, 1644