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Xiao Ming's money is four times that of Xiao Fang's. Xiao Ming spent 60 yuan, Xiao Fang spent 16 yuan, and the rest of Xiao Ming's money is five times that of Xiao Fang's. how much did they have?
Small square has x yuan
4x－60=5﹙x－16﹚
x=20
4x=80
They had 80 yuan and 20 yuan each
Xiaoming and Xiaofang start from home to school respectively. Xiaoming takes 15 more miles than Xiaofang, and Xiaofang takes 18 more time than Xiaoming. So the speed ratio of Xiaoming and Xiaofang is ()
A. 5：8B. 8：5C. 27：20D. 16：15
Xiaoming's speed: (1 + 15) △ 1 = 65, Xiaofang's speed: 1 △ 1 + 18 = 89, the ratio of Xiaoming's speed to Xiaofang's speed is: 65:89 = 27:20, so choose: C
Xiao Fang bought 5 boxes of sugar and Xiao Ming bought 4 boxes of biscuits, which cost 44 yuan. If two people exchange a box, the value of their goods will be equal
By arithmetic
4-1＝3
4-2＝2
Three boxes of sugar and two boxes of biscuits cost the same amount
So sugar 44 (5 + 4x3 / 2) = 4 yuan
Biscuit 4x3 / 2 = 6 yuan
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