Question 525643
Henry traveled a miles in b hours and then increases his rate by c miles per hour. How long would it take him to travel 1000 miles at the new rate?
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His rate for the 1st a miles is a/b
His new rate is (a/b) + c = (a + bc)/c
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To go 1000 miles
t = d/r = 1000/(a+bc)/c
= 1000c/(a+bc) hours