From two points between which distance of 22.4 km, two cyclists at the same time leave. If they go towards each other, then will meet in an hour after departure; if go in one direction, then back will catch up front in 7 hours after departure. At what speed does everyone drive?

312
(x + s) *1=22.4 (x - s) *7=22.4 x + at =22.4 x - at =3.2 we Put: the 2nd =25.6 x =12.8 at = x-3.2 at =9.6 Answer: 12.8; 9.6 km/h 2) x + at =132 11u/6=132 at =72 x / 5= at / 6 x =5u/6 x =60 Answer 60; 72
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