SOLUTION: Mandy begins bicycling west at 20moh. Liz leaves from the same pint 1 hour later bicycling west at 30mph. When will she catch up with mandy? A: define variable B: make a chart C

Question 1068972: Mandy begins bicycling west at 20moh. Liz leaves from the same pint 1 hour later bicycling west at 30mph. When will she catch up with mandy?
A: define variable
B: make a chart
C:set the distance equal to one another (they travel the same diatance) and solve the equation for t.
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
When? = time = x
Mandy: 20x
Liz: 30(x-1)
20x = 30(x-1)
20x = 30x-30 add 30 and subtract 20x on both sides:
10x = 30
x = 3 they will meet 3 hours after Mandy left, 2 hours after Liz left
-------------------------------------
Check:
20(3) = 60
30(3-1) = 60 Correct
P.S.: this is another answer, in case you need it: they meet when each has traveled 60 miles
:
John
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