Buns are sold in Sabrina Pastry Shop at the prices as shown:
1 apricot bun $1.60
1 cheese bun $1.30
MrsChew bought 2 more cheese buns than apricot buns from this pastry shop. She paid $20 in total. How many buns did Mrs Chew buy altogether?
|
Apricot buns |
Cheese buns |
Total buns |
Number |
1 u |
1 u + 2 |
|
Value |
1.60 |
1.30 |
|
Total value |
1.6 u |
1.3 u + 2.6 |
2.9 u + 2.6 |
Amount that Mrs Chew paid for apricot buns
= 1 u x 1.60
= 1.6 u
Amount that Mrs Chew paid for cheese buns
= 1.30 x (1 u + 2)
= 1.3 u + 2.6
Total amount that Mrs Chew paid
= 1.6 u + 1.3 u + 2.6
= 2.9 u + 2.6
2.9 u + 2.6= 20
2.9 u = 20 - 2.6
2.9 u = 17.4
1 u = 17.4 ÷ 2.9 = 6
Number of buns that Mrs Chew bought altogether
= 2 u + 2
= 2 x 6 + 2
= 12 + 2
= 14
Answer(s): 14