Natalie originally had $(18x-400) pocket money.After buying 4分之7x sweets,$6
were left.Given that the price of each sweet is $2.
A.Express,in term of x,the amount of money Natalie had spent on sweets.
B.Find the value of x.
C. How much money did Natalie originally have?
中一數學有唔識!
2009-12-29 4:15 am
回答 (3)
2010-01-02 4:58 pm
✔ 最佳答案
A. Express,in term of x,the amount of money Natalie had spent on sweets.Given that the price of each sweet is $2.
so, the amount of money spent on sweets = $2 * (7x)/4 = $(7x)/2
B. Find the value of x.
(18x - 400) - (7x)/2 = 6
18x - (7x)/2 = 406
(36x)/2 - (7x)/2 = 406
(29x)/2 = 406
29x = 812
x = 28
C. How much money did Natalie originally have?
It is found that x=28,
so the amount of money Natalie originally have
= $(18*28-400)
= $(504 - 400)
= $104
2010-01-02 4:45 am
4分之7x ?????????????
Natalie originally had $(18x-400) pocket money.After buying 7/4 x sweets,$6 were left.Given that the price of each sweet is $2.
Natalie originally had $(18x-400) pocket money.After buying 7/4 x sweets,$6 were left.Given that the price of each sweet is $2.
2009-12-29 4:28 am
A. The amount of money Natalie had spent on sweets = ($2)(7x/4) = $7x/2
B. (18x - 400) - 7x/2 = 6
14.5x = 406
x = 28
C. Natalie originally have 18*28 - 400 = $104
B. (18x - 400) - 7x/2 = 6
14.5x = 406
x = 28
C. Natalie originally have 18*28 - 400 = $104
收錄日期: 2021-04-23 23:24:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091228000051KK01622