(2/5)x=5+7
Solution: x=30
This road is 30 kilometers long.
Solution: Suppose there are X people in Factory B, and make an equation according to the meaning of the question:
(2/5)x+ 100=400
Solution: x=750
A: there are 750 people in factory B.
Solution: Let the headscarf price be X yuan, and set the equation according to the meaning of the question:
x*2+( 1/2)x*2=39，6
Solution: x =13,2
( 1/2)x=6.6
Answer; Pillow towel price 6.6 yuan, headscarf price 13.2 yuan.
Solution: Suppose there are X boys, and do the equation according to the meaning of the question:
There is something wrong with the problem. There are more boys than the total If boys account for five-eighths of the total, the conclusion is established.
Solution: Suppose there are X boys, and do the equation according to the meaning of the question:
x=(5/8)*(x+x- 10)
Solution: x=25
x- 10= 15
A: Boys are 25 and girls are 15.
Solution: Let this bucket of water have xkg, and set the equation according to the meaning of the question:
(1/3)*x= seventeen and three quarters-twelve and one quarter.
Solution: x= 15
Answer; This bucket of water weighs 15kg.