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put this solution on YOUR website!Husband and wife start from the same starting point and run in the same direction. The husband runs twice the rate of the wife. After 1 1/2 hours, the distance between the two is 7.5 km. find the speed of each.
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Wife DATA:
rate = x kph ; time = 1.5 hours ; distance = rt = 1.5x km
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Husband DATA:
rate = 2x kph ; time = 1.5 hours; distance = rt = 3x km
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EQUATION:
distance - distance = 7.5 km
3x - 1.5x = 4.5 km
1.5x = 7.5
x= 5 kph ( wife's rate)
2x = 10 kph (husband's rate)
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Cheers,
Stan H.
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