lisaislisa

i know , i know
thx T.X ^^

from Y.T.

daydream

这题越看越糊涂.问的是remaining value of money.答案怎么可能是4 3 2 1 0 呢?
如果"the digit of 5t must be 0 or 5, consequently that of y must be 8 or 3",那
remaining value of money就是: 8*0.05 OR 33*0.05, 没答案呀?
这题到底问什么呀? 请教DX.

dorry

i cannot figure it out either.

the total value of money =2.9

how can the remaining value of money =3?

dorry

i get it.

daydream:the question is there are how many 0.05 coins left,not the value of money

thx,dxjm

dorry

i get it.

daydream:the question is there are how many 0.05 coins left,not the value of money

thx,dxjm

stoneren

A sum of money that includes two kinds of coins, 0.25 and 0.05 face value. The total maney is 2.9 dollars. Ask if the number of 0.25 coins is divided by 5, what is the remaining value of money.

0.25t+0.05y=2.9 => 5t + y=58
the meaning of the question is that 't' is the multiple of 5, then t=0,5,10,or15. If t=10,y=8, and if y=3, then t=11, not the multiple of 5.
I donot know who is right.

daydream

To dorry:
If the question is there are how many 0.05 coins left. Then:
0.25t+0.05y=2.9 => 5t + y=58
T is the multiple of 5, then t=5 or 10,then y=33 or 8 , still cannot find the answer.