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If a plane leaves and it takes two hours to get there. When it returns it takes 30 minutes longer because it was going 10mph slower. What was the speed

 Feb 14, 2020

Best Answer 

 #1
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2 hr  *  x m/hr    = 2 x miles

 

2 .5 hr * (x-10) =  2 x miles

2.5x   - 25    = 2x

.5 x = 25

x = 50                     50 miles hr going    40 coming back        100 miles           (really slow plane)

 
 Feb 14, 2020
 #1
avatar+20216 
+2
Best Answer

2 hr  *  x m/hr    = 2 x miles

 

2 .5 hr * (x-10) =  2 x miles

2.5x   - 25    = 2x

.5 x = 25

x = 50                     50 miles hr going    40 coming back        100 miles           (really slow plane)

 
ElectricPavlov Feb 14, 2020

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