Quantitative Aptitude - Arithmetic Ability Questions

Reflection of the point (2,­7) in the y­axis is

If the three numbers in the ratio 3:2:5 be such that the sum of the squares is equal to 1862 then which number is the middle one.

What is the fourth proportional to 6, 24 and 83?

(45.004% of 1439.97 –15.99% of 2249.97) ÷ 35.98 = ?

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

If two successive discounts of 50% and 10% are offered, then what is the net discount (in %)?

If 1/6 of x - 7/2 of 3/7 equals - 7/4, then the value of x is

After allowing a discount of 20% on Marked price Kishore makes a profit of 12%. What percentage is the Marked price above the Cost price?