Question

The average height of Al, Anne, and Allan is 66 inches. If Arnel is included in the group, their average height becomes 70 inches. How tall is Arnel?

Answer 1

(66 + 66 + 66 + x) / 4 = 70

Solve for x

Answer 2

zoe is 110 cm tall Claire is 10 cm taller how tall is claire