1.

of distance x km with a speed of 4 kmph and the remaining distancewith a speed of 5 kmph. If the total time taken for the journey is 56 minutes, then x=

Answer»

let the distance be xin first case, distance =2x/3speed =4time =distance /speed =2x/3/4 =x/6now in second case ,distance =x - 2x/3 =x/3speed =5time =distance /time = x/3/5 = x/15and, given total time =56 x/6 +x/15=565x+2x/30=567x/30=56x=240

sorry, it mistake from total Time =56/607x/30=56/60x=8/2x=4



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