Buns are sold in Julie Bakery at the prices as shown:
1 vanilla bun $1.90
1 strawberry bun $1.40
MrsLim bought 2 more strawberry buns than vanilla buns from this bakery. She paid $16 in total. How many buns did Mrs Lim buy altogether?
|
Vanilla buns |
Strawberry buns |
Total buns |
Number |
1 u |
1 u + 2 |
|
Value |
1.90 |
1.40 |
|
Total value |
1.9 u |
1.4 u + 2.8 |
3.3 u + 2.8 |
Amount that Mrs Lim paid for vanilla buns
= 1 u x 1.90
= 1.9 u
Amount that Mrs Lim paid for strawberry buns
= 1.40 x (1 u + 2)
= 1.4 u + 2.8
Total amount that Mrs Lim paid
= 1.9 u + 1.4 u + 2.8
= 3.3 u + 2.8
3.3 u + 2.8= 16
3.3 u = 16 - 2.8
3.3 u = 13.2
1 u = 13.2 ÷ 3.3 = 4
Number of buns that Mrs Lim bought altogether
= 2 u + 2
= 2 x 4 + 2
= 8 + 2
= 10
Answer(s): 10