F1 maths(immediately) 15 points!!!

$10.8/3 -1.2
=$3.6-1.2
=$2.4
The price of a banana is $2.4 .

2007-10-28 15:49:14 補充：
if you want to use algebra, it will be like this:Let the price of a banana be y. 3(y+1.2)=10.83(y+1.2) / 3 =10.8 / 3 y+1.2 =3.6 y+1.2-1.2 =3.6-1.2 y =2.4The price of a banana is $2.4 .

2007-10-28 15:56:16 補充：
如果你用方程黎做,系做設个时,你就要先用Let(即系設)之后就抄最后个句(5要抄find,其他个D就要抄)同埋系設既is,am, are 通通都要换成be之后开始做解拉5好5记得要写埋答句就可以系做功课或者考试个时get满分架拉(当然要无错拉)

2007-10-28 15:59:04 補充：
如果你系用我第一种方法黎做既,你就一定要记得每一个步骤都写左单位5系既话,可能会扣分(通常都会扣)仲有要记住写埋答句先好完结

2007-10-28 16:00:39 補充：
下次遇到E D问题,5洗问人,自己想深一曾,你就会明架拉

$10.8/3 -1.2
=$3.6-1.2
=$2.4

in the market , the price of an apple is more than that of a banana by $1.2 , and the price of 3 apples is $10.8 . find the price of a banana.
方法1
設the price of a banana is x.
10.8 / 3 = x + 1.2
3.6 = x + 1.2
x = 2.4 (dollars)
方法2
10.8 / 3 - 1.2
= 2.4 (dollars)

Let the price of an apple is x and y is a banana
x-y=1.2...............(1)
3x=10.8................(2)
3x=10.8 From(2)
x=10.8/3.............(3)
10.8/3-y=1.2 Putting (3) into (1)
10.8/3-y+y=1.2+y
(10.8/3X)3=3(1.2+y)
10.8=3.6+3y
7.2=3y
y=2.4
The price of a banana is $1.2

if apple is x,banana is y:
x=y+1.2---1
3x=10.8---2

1*3 is:
3x=3y+3.6---3

3 mean 2

10.8=3y+3.6
3y=7.2
y=7.2/3
y=2.4

so,banana's price cost $2.4 for once.

設apple為a
3a=10.8
a=3.6

3.6-1.2=2.4
the price of a banana is $2.4

10.8/3 -1.2
=3.6-1.2
=2.4
price of a banana is $2.4.

Let x be the price of a banana.
3(x+1.2)=10.8

x+1.2=10.8/3

x+1.2=3.6

x=3.6-1.2

x=2.4

The price of a banana is $2.4.

$10.8/3 - $1.2
=$2.4

let the banana be $B then apple is $(B+1.2)

3(B+1.2)=10.8
3B+3.6=10.8
3B=7.2
B=$2.4

so the price of a banana is $2.4