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Simple problems in sixth grade mathematics
Two trucks, A and B, drove opposite each other from two stations and met five hours later. It is known that the speed ratio between truck A and truck B is 14: 15, and the speed of truck A is 56KM. How many kilometers are the two stations apart?

Speed of truck B: 56 * 15/ 14 = 60.

The sum of the speeds of Party A and Party B: 56+60 = 1 16.

Distance:116 * 5 = 580km.

The two stations are 580 kilometers apart.

There are 44 students in class 6/kloc-0, of whom 2/3 are boys and 4/5 are girls. How many boys and girls are there in class 6/kloc-0?

2/3*3/2= 1

4/5*3/2=6/5

1+6/5= 1 1/5

44÷ 1 1/5=44*5/ 1 1=20

44-20=24

There are 24 boys and 20 girls in class 6/kloc-0.

13 (x+5) *13 =169 (find x)

13(X+5)* 13 = 169

169*(X+5)= 169

X+5= 1

X=-4