Delhi Police Constable 7th Dec 2017 Shift-1

If 80% of $$P = \frac{2}{5}$$ of Q, then what is P : Q?

The annual income of Rahul and Mohit are in the ratio 17 : 12 and the ratio of their expenditure is 5 : 3. If each of them saves Rs 9000 yearly, then what will be the annual income (in Rs) of Mohit?

12 persons have Rs 49 on an average. If a person with Rs 55.5 join them, then what will be the new average (in Rs)?

What will be the simple interest (in Rs) on a sum of Rs 4000 for 6 years at the rate of 8% per annum?

Vyom purchased 30 dozen pens at the rate Rs 48 per dozen. He sold 10 dozen at 20% profit and the remaining 20 dozen at 10% profit. What is his profit percentage?

The cost price of an article is 64% of the marked price. What will be the gain percentage after allowing a discount of 12% on the marked price?

The ratio of the outer and the inner perimeter of a circular path is 14 : 11. If path is 15 meters wide, then what is the radius (in metres) of the inner circle?

A boat covers 20 km upstream and 40 km downstream distance in 4 hours, while it covers 70 km upstream and 60 km downstream distance in 10 hours. What is the speed (in km/hr) of the current?

P started a business by investing Rs 60000. After 4 months Q joined the business by investing Rs 80000. After 4 more months, R joined the business by investing Rs 100000. What will be the ratio of profits of P, Q and R at end of 2 years?

S and V can do a work in 12 days. M and S can do the same work in 16 days. M and V can do the same work in 24 days. In how many days S, V and M together can complete the same
work?