What is the value of 20% of 500% of 50?

A shopkeeper by selling 5 items, earns a profit equal to the selling price of 1 item. What is his profit percentage?

The average weight of P, Q and R is 47 kg. If the average weight of P and Q be 32.5 kg and that of Q and R be 48.5 kg, then what is the weight of Q (in kgs)?

Profit of Rs 12,400 has to be divided between three partners A, B and C in the ratio 5:7:8. How much does B get (in Rs)?

What is the effective discount on two successive discounts of 20% and 25%?

What is the area (in sq cm) of an equilateral triangle of side 6 cm?

A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?

What least number must be added to 213, so that the sum is completely divisible by 9?