✔ 最佳答案
1) 用 F 代表 florin，C代表 crnts，P代表"a pound of tea"。
price of one pound of tea that costed 350 florins for half a pound,
0.5 P = 350 F
P = 700 F
∴each pound of tea cost 700 florins
how many crnts do 700 florin cost?
F = 28 C
700 F = 700 × 28C
700 F = 19600 C
∴ 700 florin cost 19600 crnts
∵each pound of tea cost 700 florins and 700 florin cost 19600 crnts.
∴each pound of tea cost 19600 crnts.
2) 以下我用 F代表 florins ， PA 代表 "a pineapple"
If a pineabple costed about 500 florins for one, how many could I buy with 5500 florins?
500 F = PA
F = PA ÷ 500
5500 F = 5500 × (PA ÷ 500)
5500 F = 11PA
∴ I could buy 11 Pineapples with 5500 florins.
