Q6 of 24 Page 213

The compound ratio of 3:4 and the inverse ratio of 4:5 is 45:x. Find x.

Given: Two ratios 3:4 and 4:5


Now Inverse ratio of 4:5 is 5:4


Compound Ratio of 3:4 and 5:4 would be then


3 x 5 : 4 x 4(∵ Compound ratio of a:b and c:d is ac:bd)


15 : 16


Given ratio is 45:x



∴ x = 48.


More from this chapter

All 24 →
4

If the weight of 12 sheets of thick paper is 40 grams. How many sheets of the same paper would weigh 5/2 kilograms?

 5

The population of a town increases by 10% annually if its present population is 60000. What will be its population after 2 years?

 7

A car covers a distance of 3150 in 22 hours 12 minutes. If It covers 5/7 of its journey at a speed of 150 km/h find the speed of the car for the rest of its journey.

 8

A takes 6 days less than B to do a work. If both A and B working together can do it in 4 days how many days will B take to finish it?