Buns are sold in Fanny Confectionery at the prices as shown:
1 cheese bun $2.20
1 apricot bun $1.60
MrsLoo bought 6 more apricot buns than cheese buns from this confectionery. She paid $21 in total. How many buns did Mrs Loo buy altogether?
|
Cheese buns |
Apricot buns |
Total buns |
Number |
1 u |
1 u + 6 |
|
Value |
2.20 |
1.60 |
|
Total value |
2.2 u |
1.6 u + 9.6 |
3.8 u + 9.6 |
Amount that Mrs Loo paid for cheese buns
= 1 u x 2.20
= 2.2 u
Amount that Mrs Loo paid for apricot buns
= 1.60 x (1 u + 6)
= 1.6 u + 9.6
Total amount that Mrs Loo paid
= 2.2 u + 1.6 u + 9.6
= 3.8 u + 9.6
3.8 u + 9.6= 21
3.8 u = 21 - 9.6
3.8 u = 11.4
1 u = 11.4 ÷ 3.8 = 3
Number of buns that Mrs Loo bought altogether
= 2 u + 6
= 2 x 3 + 6
= 6 + 6
= 12
Answer(s): 12