The ratio of average temperature between Jaipur and Delhi is 9 : 7 and that between Jaipur and Mumbai is 11 : 8. Find the ratio of average temperature between Delhi and Mumbai.

Rahul travels the first 50 km at 10 kmph, the next 40 km at 20 kmph and then the next 60 km at 15 kmph. Find his average speed for the whole journey.

The ratio of three numbers is 3:4:7 and their product is 18144. The numbers are ________.

The difference between Compound Interest and Simple Interest on a sum of ₹50,000 for 2 years at 6.5% p.a. is ________.

What is the single discount that is equivalent to two successive discounts of 12% and 20%?

The simple interest on ₹200 for 7 months at 5 paisa per rupee per month is ________.

A shopkeeper buys a mobile phone for Rs.12,500 and sells it for Rs.13,350. Find his profit percent.

Virat obtained 18% marks in an examination and he failed by 60 marks. If passing marks are 33%, then total marks are ________.

How many minutes will a motor-car travelling at 45 km/hr take to cover a distance of 15 km?