SOLUTION: A student cycles for x hours at 12km/h and y hours, at 16km/h, altogther the student cycles 66km in 5 hours find x and y ?
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Question 790142: A student cycles for x hours at 12km/h and y hours, at 16km/h, altogther the student cycles 66km in 5 hours find x and y ? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! A student cycles for x hours at 12km/h and y hours, at 16km/h, altogther the student cycles 66km in 5 hours find x and y ?
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x+y=5
y=5-x
distance=travel time*speed
..
12x+16y=66
12x+16(5-x)=66
12x+80-16x=66
4x=14
x=14/4=7/2=3.5(hrs)
y=10/2-7/2=3/2=1.5(hrs)
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