Muffins are sold in Marion Pastry Shop at the prices as shown:
1 cranberry muffin $2.20
1 apricot muffin $1.60
MrsSeow bought 3 more apricot muffins than cranberry muffins from this pastry shop. She paid $20 in total. How many muffins did Mrs Seow buy altogether?
|
Cranberry muffins |
Apricot muffins |
Total muffins |
Number |
1 u |
1 u + 3 |
|
Value |
2.20 |
1.60 |
|
Total value |
2.2 u |
1.6 u + 4.8 |
3.8 u + 4.8 |
Amount that Mrs Seow paid for cranberry muffins
= 1 u x 2.20
= 2.2 u
Amount that Mrs Seow paid for apricot muffins
= 1.60 x (1 u + 3)
= 1.6 u + 4.8
Total amount that Mrs Seow paid
= 2.2 u + 1.6 u + 4.8
= 3.8 u + 4.8
3.8 u + 4.8= 20
3.8 u = 20 - 4.8
3.8 u = 15.2
1 u = 15.2 ÷ 3.8 = 4
Number of muffins that Mrs Seow bought altogether
= 2 u + 3
= 2 x 4 + 3
= 8 + 3
= 11
Answer(s): 11