Buns are sold in Risa Cake Shop at the prices as shown:
1 chocolate chip bun $2.60
1 banana bun $2.40
MrsLee bought 5 more banana buns than chocolate chip buns from this cake shop. She paid $22 in total. How many buns did Mrs Lee buy altogether?
|
Chocolate chip buns |
Banana buns |
Total buns |
Number |
1 u |
1 u + 5 |
|
Value |
2.60 |
2.40 |
|
Total value |
2.6 u |
2.4 u + 12 |
5 u + 12 |
Amount that Mrs Lee paid for chocolate chip buns
= 1 u x 2.60
= 2.6 u
Amount that Mrs Lee paid for banana buns
= 2.40 x (1 u + 5)
= 2.4 u + 12
Total amount that Mrs Lee paid
= 2.6 u + 2.4 u + 12
= 5 u + 12
5 u + 12= 22
5 u = 22 - 12
5 u = 10
1 u = 10 ÷ 5 = 2
Number of buns that Mrs Lee bought altogether
= 2 u + 5
= 2 x 2 + 5
= 4 + 5
= 9
Answer(s): 9