Question

Lee is y years old

Toby is 8 years younger than lee
the sum is of their ages is less than 41
write down in terms of y an inequality to show this information

Answer 1

Age of Lee = y years

Age of Toby = (y - 8) years

Sum of their ages < 41

or, y +y - 8 < 41

or, 2y - 8 < 41

Adding '8' on both sides,

or, 2y - 8 + 8 < 41

or, 2y < 41