Quantitative Aptitude - Arithmetic Ability Questions

The average of first 20 multiples of 12 is

The alcohol and water in a mixture are in the ratio of 7 : 8 respectively. If 11 litre water is added to it, then the ratio of alcohol and water in the new mixture becomes 3 : 5. What is the total quantity (in litres) of the alcohol in the new mixture?

A sum of Rs. 4000 is lent out in two parts, one at 8% simple interest and the other at 10% simple interest. If the annual interest is Rs. 352. The sum lent at 8% is

For what sum will the simple interest at R% for 2 years will be R?

Gautam travels 160 kms at 32 kmph and returns at 40 kmph. Then average speed is

While selling a watch, a shop-­keeper gives a discount of 5%. If he gives a discount of 7%, he earns Rs.15 less as profit. The marked price of the watch is

What is the value of (1/√3 + sin45 ) ?

If √(sec2A ­ 1) = x, then the value of x is