p.6-f.1

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♂FiSh♀

2007-08-12 11:21 pm

列步驟
1.The sum of three consecutive integer is 45.What are three numbers?

2a.Mandy put £1500 a British bank at an interest rate of 6%p.a.How much will the interest be after 2 years?

b.After Mandy has put £1500 in the bank,if the interest rate is the same,how long does she take to get £450 interest?

c.Ricky put his money in a bank for 3 years.If the interest rate is 6%p.a.,he can get £360 interest.How much did he put in the bank?

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回答 (2)

[匿名]

2007-08-12 11:32 pm

✔ 最佳答案

1. 14,15,16
because : 14+15+16=45

2.a1500X6%X2 = 180

b 1500X 6%X Y= 450
Y = 5
c Z X 6% X 3 = 360
Z = 2000

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ANGELINA

2007-08-12 11:36 pm

功課自己做啦= =...

第1題.你知唔知什麼是consecutive integer..查字典..我諗小6唔會唔識..
第2abc 題原理一樣..首先你知唔知呢d點計先..
舉例2a...interest係利息..唔包括個本金(我識英文only唔知係唔係咁叫)1500
咁一年利率係6%..就將1500x6%x2
x2係因為佢要2年..
得出黎2年之後既利息係有£180

bc 既原理同上面一樣..只係倒轉問你另一個數...

條式係存既幾多$ x利率 x年數=interest
咁b 問幾多年...c存幾多..
唔好話唔識啦...要動動腦

參考: me

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