Average of a,b,c is 12 and the average of b, c is 15. So find the value of a.
A certain sum of money amounts to Rs. 10400 in 5 years and Rs. 9440 in 3 years respectively. Find the principal.
The value of x satisfying √5+3√x=3 is
The percentage of 10 minutes in one hour is
What percentage is 40 paise of 2 rupees
A car travels 420km in 5 hours. Find the distance covers in 7 hours and 30 minutes at the same speed.