Question

谁帮我解英文数学题

The number of beads in Box G was 6/17 times as many as the number of beads in Box C. Sally later took some beads from both boxes and gave them to Kelvin. The number of beads she took from Box G was 7/18 time s the number of beads she took from Box C. as a result , she had 49 beads left in box C and 16 beads left in Box G. how many beads did Sally give to Kelvin?

Answer 1

G盒子里的珠子是C盒子里的6/17，sally从两个盒子里拿出珠子给了kelvin，她从G里面拿出的珠子是C里面的7/18，结果，C里面还剩49个珠子，G里剩16个，问sally拿了多少珠子给kelvin.
设
G里有g个珠子，C里有c个珠子
sally从G里拿出x个珠子，从C里拿出y个珠子
则，
c*6/17 =g
y*7/18=x
x+16=g
y+49=c
解这个方程组便可得出
g=30
c=85
x=14
y=36
所以x+y=14+36=50

Answer 2

设盒子G和盒子C原来分别有x个和y个面包，Sally从盒子C拿出了z个面包，则
x=6y/17
x-7z/18=16
y-z=49
解得z=36
所以 Sally给kelvin的面包为25z/18=50个

追问

不理解 能详细得解释吗