Muffins are sold in Emma Pastry Shop at the prices as shown:
1 cherry muffin $1.30
1 apple muffin $1.20
MrsLeng bought 10 more apple muffins than cherry muffins from this pastry shop. She paid $22 in total. How many muffins did Mrs Leng buy altogether?
|
Cherry muffins |
Apple muffins |
Total muffins |
Number |
1 u |
1 u + 10 |
|
Value |
1.30 |
1.20 |
|
Total value |
1.3 u |
1.2 u + 12 |
2.5 u + 12 |
Amount that Mrs Leng paid for cherry muffins
= 1 u x 1.30
= 1.3 u
Amount that Mrs Leng paid for apple muffins
= 1.20 x (1 u + 10)
= 1.2 u + 12
Total amount that Mrs Leng paid
= 1.3 u + 1.2 u + 12
= 2.5 u + 12
2.5 u + 12= 22
2.5 u = 22 - 12
2.5 u = 10
1 u = 10 ÷ 2.5 = 4
Number of muffins that Mrs Leng bought altogether
= 2 u + 10
= 2 x 4 + 10
= 8 + 10
= 18
Answer(s): 18