In an examination , every candidate took chemistry or mathematics or both . 60% took chemistry and 65 % took mathematics. the total number of candidates was 3000 How many took both mathematics and chemistry ?:
A rectangular garden is situated inside a square plot of side 30 meters. if the ratio of the length and breadth of the garden is 6:5 ,then the area of the largest garden is :
The percentage of increase in the area of a rectangle , when both of its length and breadth are increased by 20% is :
The age of babu is double the age od sabu. 3 years back the ages of babu and sabu were in tha ratio of 15:7. then the age of babu is:
25 % of number is added to 20,the result is 50% of the number.Then the number is :
The Greatest number that will divide 65,110, and 150 leaving remainders 2,5 and 3 respectively is :