contestada

Two cars leave towns 640 kilometers apart at the time and travel toward each other. One cars rate is 14 kilometers per hour more than the others. If they meet in 4 hours, what is the rate of the faster car? Do not do any rounding.

Respuesta :

SmartyIsMe
The rate of the faster car would be 87 kilometers per hour.
AnnabethChase139
Car A = 14 + Car B
4(Car A + Car B)=640

A=B+14
4(A+B)=640

A=B+14
A+B=160

(B+14) + B= = 160
2B+14=160
2B=146

B=73                A= 87

73+73+73+73+87+87+87+87
292+348=640

I think the faster car went 87 kilometers per hour.