Quantitative Aptitude - Arithmetic Ability Questions

The ratio of present ages of Ramya and Saurabh is 8:7. After 10 years the ratio of their ages will be 12:11. What is Ramya's present age?

The rate of simple interest per annum at which a sum of money double itself in 16 2/3 yrs is

A certain bank offers 8% rate of interest on the 1st year and 9% on the 2nd year in a certain fixed deposit scheme. If Rs 17,658 are received after investing for 2 years in this scheme, then what was the amount (in Rs) invested?

Δ PQR is right angled at Q. If m√R = 30°, then what is the value of Cot P?

If sin3A = x, then value of x is

A shop keeper allows 20% discount on the marked price on his articles. Find the marked price of an article for which he charges Rs. 740

If 16% of an electricity bill is deducted, Rs 1806 is still to be paid. How much was the bill?

Select the odd word/letters/number/number pair from the given alternatives.