1. A farmer travelled a distance of 61 km in 9 hours. He travelled partly on foot @ 4 km/hr and partly on bicycle @ 9 km/hr. The distance travelled on foot is:
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By: guest on 01 Jun 2017 05.49 pm
Let the distance travelled on foot be x km. Then, distance travelled on bicycle = (61 -x) km. So, x + (61 -x) = 9 4 9 9x + 4(61 -x) = 9 x 36 5x = 80 x = 16 km.