The mass of one marbles x grams. A jar contains 400 marbles. The empty jar has a mass of 60 grams

Question

Write an expression in x for the total mass of the jar and marbles

Calculate the value of x if the total mass of the jar and marbles is 1100 grams.

Answer 1

Total mass of jar with marbles = 60 grams + 400x grams = 1100 grams x = mass of 1 marble

Solving for x = (1100-60)/400 = 2.6 grams