Meenu has some money. She can buy 40 books or 90 pens with it. She keeps 20% of the money for food and with the remaining buys 36 pens and some books. Find the number of books she buys.

Two hours after a goods train passed a station, another train travelling at a speed of 63 km / hr following goods train passed through that station, if after passing the station the train overtakes the goods train in 7 hours What is the speed of the goods train ? 

Sonu and Titu entered into a partnership for a year in which Sonu invested Rs 120000 and Titu invested Rs 70000. After 4 months, Sonu invested Rs 80000 more whereas after 5 months, Titu invested Rs 30000 more. When two months were left Sweety also joined investing Rs 400000 as her contribution. If the profit for the year was 12.5% of 1572000, find the share of Sonu, Titu and Sweety.

What approximate value should come in place of question mark.
(1814 .9  ÷  121) x 35.78 ÷ 45.1023 = ? 

One certain Principal if the Simple interest for two years is Rs 2400 and Compound interest for the two years is Rs 2544, what is the rate of Interest? 

What is the angle of the angle between the clock needles at 2:30?

QR is the chord of a circle with center o. p is a point on major arc QR as shown in figure. What is the value of ∠QPR + ∠OQR?

In an election between two candidates, the winning candidate has got 70% of the votes polled and has won by 15400 votes. What is the number of votes polled for loosing candidate?