If two quantities x and y vary directly with each other, then(a) x/y r

1.	If two quantities x and y vary directly with each other, then(a) x/y remains constant. (b) x – y remains constant. (c) x + y remains constant. (d) x × y remains constant.
Answer» If two quantities x and y vary directly with each other, then x/y = k = constant. Since, in direct proportion, both x and y increases or decreases together such a manner that the ratio of their corresponding value remains constant. Hence, option (a) is correct

If two quantities x and y vary directly with each other, then(a) x/y remains constant. (b) x – y remains constant. (c) x + y remains constant. (d) x × y remains constant.

Answer»

If two quantities x and y vary directly with each other, then x/y = k = constant.

Since, in direct proportion, both x and y increases or decreases together such a manner that the ratio of their corresponding value remains constant.

Hence, option (a) is correct