Q3 of 106 Page 310

Assuming land to be uniformly fertile, the area of land and the yield on it vary

(a) If land to be uniformly fertile, then the area of land and the yield on it vary directly with each other.


Hence, option (a) is correct.


Note two quantities x and y are said to be in direct proportion, if they increase or decrease together in such a manner that the ratio of their corresponding values remains constant.

More from this chapter

All 106 →
1

Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v?

 2

Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?

 4

The number of teeth and the age of a person vary

 5

Truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is