A man covers a distance on scooter .had he moved 3kmph
faster he would have taken 40 min less. If he had moved
2kmph slower he would have taken 40min more.the distance is.  Select the correct option:  A) 42m  B) 53m  C) 37m  D) 40m  E) 29m
Let distance = x m   Usual rate = y kmph   x/y – x/y+3 = 40/60 hr   2y(y+3) = 9x ————–1   x/y-2 – x/y = 40/60 hr y(y-2) = 3x —————–2   divide 1 &amp; 2 equations   we get 2(y+3)=3(y-2)   2y + 6 = 3y-6   y= 12   Put y=12 in eq.--2   12*10=3x   by solving we get x = 40   Answer is 40m
<result>D</result>
A man covers a distance on scooter .had he moved 3kmph
faster he would have taken 40 min less. If he had moved
2kmph slower he would have taken 40min more.the distance is.