Question

A family member had some five-dollar bills and one-dollar bills in her wallet. Altogether she has 18 bills and s total of $62. Write the simultaneous linear equations that represent this situation. How many of each type of bill does she have?

Answer 1

O for ones and F is fives
A) O + F = 18
B) O + 5F = 62
Multiply A) by -1
A) -O -F = -18 then add to B
B) O + 5F = 62
4 F = 44
11 Fives and 7 Ones

Check
11* $5 = 55.00
7 * $1 = 7.00