Mrs Dana bought some sandwiches and muffins at the prices shown.
She bought 5 more muffins than sandwiches and spent $47 altogether. How many sandwiches did she buy?
|
Muffins |
Sandwiches |
Total |
Number |
1 u |
1 u + 5 |
|
Value |
$5 |
$4 |
|
Total value |
5 u |
4 u + 20 |
9 u + 20 |
Amount spent on muffins
= 5 x 1 u
= 5 u
Amount spent on sandwiches
= 4 x (1 u + 5)
= 4 u + 20
Total amount spent on the pastries
= 5 u + 4 u + 20
= 9 u + 20
9 u + 20 = 47
9 u = 47 - 20
9 u = 27
1 u = 27 ÷ 9 = 3
Total number of sandwiches
= 1 u
= 3
Answer(s): 3