Answer to Question #197451 in Algebra for Andu

Question

1. Deni is 36 years old, while Lira is 44 years old. Lira says she and Danny are about the same age in the top ten. a) Is Lira right and why? b) Will Deni and Lira be the same age in the nearest tenth even after one year? c) How old will Deni and Lira be next time they are of the same approximate age in the nearest ten?

Answer 1

a) $|36-40|=4=|44-40|$

Lira is right.

b) $|37-40|=3\not=5=|45-40|$

Deni and Lira will not be the same age in the nearest tenth after one year.

c) $|41-40|=1=|49-50|$

Deni will be 41 years old, while Lira will be 49 years old.