If 6 men and 8 boys can do a piece of work in 10 days and 26 men and 48 boys can do the same in2days, then the time taken by 15 men and 20 boys to do the same type of work will be

The value of   $$ {(0.03)^2 - (0.01)^2}\over 0.03-0.01 $$

A number when divided successively by 4 and 5 leaves the remainder 1 and 4 respectively. When it is successively divided by 5 and 4 the respective remainders will be: 

Time in a clock is 3 : 13, what time will be appear in water ? 

Vijay lent Rs.5000. At what rate percent per annum he lent the money?
Statement I: The difference between the simple interest and compound interest on same money is Rs.60.
Statement II: The simple interest obtained after 4 years is Rs.300.
Statement III: The difference between compound interest and simple interest on Rs.60,000 in 2 years is Rs.1350.

A and B started a business with their investments in the ratio 7 : 11. After four months, C joined them with an investment which is Rs.4,000 more than A's investment and he is the working partner who earns a monthly salary of Rs.1,200. The share of 'C' in the total profit of Rs.65,600 is Rs.22,400. What is the share of A?

A person can buy a refrigerator for Rs.15,850 on cash payment or in installments for every year at 10% p.a for four years compounded annually. What is the approximate annual installment that he should pay?

If three numbers are in the ratio 3:5:6 and their LCM Is 2160, then find their HCF.