Question

Cost of groundnuts is directly proportional to its weight. If cost of 5 kg groundnuts is ` 450 then find the cost of 1 quintal groundnuts. (1 quintal = 100 kg)​

Answer 1

$\huge\star\mathfrak\pink{{Answer:-}}$

Let the cost of groundnuts be x and weight of groundnuts be y. It is given that x varies directly as y \ x D y or x = kyIt is given that when x = 450 then y = 5, hence we will find k.

x = ky \ 450 = 5k \ k = 90 (constant of variation)

• equation of variation is x = 90y.
• if y = 100, x = 90 u 100 = 9000
• cost of 1 quintal groundnut is ` 9000.