Question

Jamie owns about 3 times as many books as Carly. Jamie owns 42 books. Write an equation and use it to estimate the number n of books Carly owns

Answer 1

Jamie books= j
Carly books= c
J approximately equal 3c
J= 42 substitute in equation
42 approximately equals 3c
C approximately equals 14
So carly has about 14 books

Answer 2

y = 3n where y is the number of books owned by Jamie which is equal to 42

Explanation:

If Jamie owns about 3 times as many books as Carly. It means that the number of books owned by Jamie is a function of the number of books owned by Carly.

If Carly owns n number of books, and Jamie owns y number of books then,

y = 3n

If Jamie owns 42 books then Carly owns

42 = 3n

n = 42/3

n = 14

Carly owns 14 books