Buns are sold in Anna Confectionery at the prices as shown:
1 banana bun $1.90
1 apricot bun $1.20
MrsThia bought 4 more apricot buns than banana buns from this confectionery. She paid $11 in total. How many buns did Mrs Thia buy altogether?
|
Banana buns |
Apricot buns |
Total buns |
Number |
1 u |
1 u + 4 |
|
Value |
1.90 |
1.20 |
|
Total value |
1.9 u |
1.2 u + 4.8 |
3.1 u + 4.8 |
Amount that Mrs Thia paid for banana buns
= 1 u x 1.90
= 1.9 u
Amount that Mrs Thia paid for apricot buns
= 1.20 x (1 u + 4)
= 1.2 u + 4.8
Total amount that Mrs Thia paid
= 1.9 u + 1.2 u + 4.8
= 3.1 u + 4.8
3.1 u + 4.8= 11
3.1 u = 11 - 4.8
3.1 u = 6.2
1 u = 6.2 ÷ 3.1 = 2
Number of buns that Mrs Thia bought altogether
= 2 u + 4
= 2 x 2 + 4
= 4 + 4
= 8
Answer(s): 8