搵人黎教我做呢幾條數plz!___!

👨🏻‍🏫 學術台數學

2008-04-12 3:50 am

1.Willie bought the books for the new school term with only$840,
which is$160which is$160cheaper than the original price.
What is the discount?←呢個問咩=.=
2.Each orange costs$2.7.
How many oranges can Mum buy with$60?How much is left?←點計=.=

更新1:

小學5年級程度呀!_!

回答 (2)

Winkie

2008-04-12 3:53 am

✔ 最佳答案

1) Let X be the original prcie.

X - 160 = 840
X = 840+160 = 1000

Discounted 160/1000 = 16%

2) $2.7 x X = $60
X = 60/2.7=22.22

So mum can buy 22 oranges with $0.22 left.

參考: myself.

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Esther

2008-04-12 4:09 am

1.) The discount
=160/840+160 X 100%
=160/1000 X 100%
=16%

2.) 60 除 2.7
=22...6
Mum can buy 22 oranges and left $0.6 .

參考: me

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