Buns are sold in Gem Bakery at the prices as shown:
1 apricot bun $2.20
1 vanilla bun $1.40
MrsGan bought 2 more vanilla buns than apricot buns from this bakery. She paid $28 in total. How many buns did Mrs Gan buy altogether?
|
Apricot buns |
Vanilla buns |
Total buns |
Number |
1 u |
1 u + 2 |
|
Value |
2.20 |
1.40 |
|
Total value |
2.2 u |
1.4 u + 2.8 |
3.6 u + 2.8 |
Amount that Mrs Gan paid for apricot buns
= 1 u x 2.20
= 2.2 u
Amount that Mrs Gan paid for vanilla buns
= 1.40 x (1 u + 2)
= 1.4 u + 2.8
Total amount that Mrs Gan paid
= 2.2 u + 1.4 u + 2.8
= 3.6 u + 2.8
3.6 u + 2.8= 28
3.6 u = 28 - 2.8
3.6 u = 25.2
1 u = 25.2 ÷ 3.6 = 7
Number of buns that Mrs Gan bought altogether
= 2 u + 2
= 2 x 7 + 2
= 14 + 2
= 16
Answer(s): 16