For the following questions answer them individually
What is the value of $$\frac{(0.7)^{3}-(0.4)^{3}}{(0.7)^{2}+\ 0.7\times0.4+(0.4)^{2}}\ $$?
A is 20% more efficient than B. If B alone can complete a piece of work in 12 days, then A alone can complete the same work in how many days?
A and B together can complete a work in 10 days. They started together but A left after 2 days and the remaining work was completed by B in 12 days. In how many days can A complete the entire work while working alone?
What will be the net discount (in percentage) after two successive discounts of 50% and 50%?
An article is sold for Rs 5330 after a discount of 18%. What is the marked price (in Rs) of the article?
Raman, Rohit and Raja are partners and invest in a business. Raman invests 1/4th of total and Rohit invest 1/3th of the total. What is the ratio of profit of Raman, Rohit and Raja respectively?