L.C.M. of 87 and 145 is

H.C.F of 14 85 and 4356 is

A seller wants a profit of 20% on the sales. Thus the percentage he should add to the cost price will be:

Sania got 182 marks and failed by 18 marks. To pass she had to secure 40% marks. What were the max marks ?

The average age of 30 boys in class and a teacher is 15. If the age of the teacher is 30 year what would be the average age of boys only ?

If 9+3-3=30 and 4+2-5=13 what is 7+4-8