Question

Three apples have a mean (average) mass of 100 , grams. The largest apple is removed. The mean of the

• remaining two apples is 70 grams. What is the mass of the largest apple?

Answer 1

160 grams

Explanation:

Let the mass of the largest apple = x.

The mass of the other two apples combined is y.

(x + y)/3 = 100

y/2 = 70

y = 140

The two other apples have a combined mass of 140 grams.

x + y = 300

x + 140 = 300

x = 160

Answer: 160 grams