Mrs Jaslyn bought some sandwiches and muffins at the prices shown.
She bought 4 more muffins than sandwiches and spent $47 altogether. How many sandwiches did she buy?
|
Muffins |
Sandwiches |
Total |
Number |
1 u |
1 u + 4 |
|
Value |
$4 |
$3 |
|
Total value |
4 u |
3 u + 12 |
7 u + 12 |
Amount spent on muffins
= 4 x 1 u
= 4 u
Amount spent on sandwiches
= 3 x (1 u + 4)
= 3 u + 12
Total amount spent on the pastries
= 4 u + 3 u + 12
= 7 u + 12
7 u + 12 = 47
7 u = 47 - 12
7 u = 35
1 u = 35 ÷ 7 = 5
Total number of sandwiches
= 1 u
= 5
Answer(s): 5