Muffins are sold in Rachel Cake Shop at the prices as shown:
1 cherry muffin $2.30
1 cheese muffin $1.10
MrsChoo bought 8 more cheese muffins than cherry muffins from this cake shop. She paid $19 in total. How many muffins did Mrs Choo buy altogether?
|
Cherry muffins |
Cheese muffins |
Total muffins |
Number |
1 u |
1 u + 8 |
|
Value |
2.30 |
1.10 |
|
Total value |
2.3 u |
1.1 u + 8.8 |
3.4 u + 8.8 |
Amount that Mrs Choo paid for cherry muffins
= 1 u x 2.30
= 2.3 u
Amount that Mrs Choo paid for cheese muffins
= 1.10 x (1 u + 8)
= 1.1 u + 8.8
Total amount that Mrs Choo paid
= 2.3 u + 1.1 u + 8.8
= 3.4 u + 8.8
3.4 u + 8.8= 19
3.4 u = 19 - 8.8
3.4 u = 10.2
1 u = 10.2 ÷ 3.4 = 3
Number of muffins that Mrs Choo bought altogether
= 2 u + 8
= 2 x 3 + 8
= 6 + 8
= 14
Answer(s): 14