Buns are sold in Winnie Confectionery at the prices as shown:
1 cheese bun $2.40
1 apricot bun $1.30
MrsLeng bought 12 more apricot buns than cheese buns from this confectionery. She paid $23 in total. How many buns did Mrs Leng buy altogether?
|
Cheese buns |
Apricot buns |
Total buns |
Number |
1 u |
1 u + 12 |
|
Value |
2.40 |
1.30 |
|
Total value |
2.4 u |
1.3 u + 15.6 |
3.7 u + 15.6 |
Amount that Mrs Leng paid for cheese buns
= 1 u x 2.40
= 2.4 u
Amount that Mrs Leng paid for apricot buns
= 1.30 x (1 u + 12)
= 1.3 u + 15.6
Total amount that Mrs Leng paid
= 2.4 u + 1.3 u + 15.6
= 3.7 u + 15.6
3.7 u + 15.6= 23
3.7 u = 23 - 15.6
3.7 u = 7.4
1 u = 7.4 ÷ 3.7 = 2
Number of buns that Mrs Leng bought altogether
= 2 u + 12
= 2 x 2 + 12
= 4 + 12
= 16
Answer(s): 16