Question

A nut and a bolt together have a mass of 98g. The mass of four bolts and two nuts is 336g. Find the mass of a nut and a bolt.​

Answer 1

the mass of a nut is 28g

the mass of a bolt is 70g

Explanation:

let the mass of a nut be x, the mass of a bolt be y.

x + y = 98 -(1)

4y + 2x = 336 -(2)

(2): 2y + x = 168 -(3)

(3) - (1): y = 70

substitute y = 70 into (1)

x + 70 = 98

x = 28