Mrs Diana bought some sandwiches and muffins at the prices shown.
She bought 3 more muffins than sandwiches and spent $25 altogether. How many sandwiches did she buy?
|
Muffins |
Sandwiches |
Total |
Number |
1 u |
1 u + 3 |
|
Value |
$5 |
$3 |
|
Total value |
5 u |
3 u + 9 |
8 u + 9 |
Amount spent on muffins
= 5 x 1 u
= 5 u
Amount spent on sandwiches
= 3 x (1 u + 3)
= 3 u + 9
Total amount spent on the pastries
= 5 u + 3 u + 9
= 8 u + 9
8 u + 9 = 25
8 u = 25 - 9
8 u = 16
1 u = 16 ÷ 8 = 2
Total number of sandwiches
= 1 u
= 2
Answer(s): 2