Let:
100%---------------->24h
30%------------------>xh
Using cross multiplication:
The answer you are looking for is TRUE, the third option. The function of a solution is to prove that the values of the variables are true. Hope this is useful for you
Answer:
It equals n=72
Step-by-step explanation:
7/8 n=63
7/8 n=63
7n/8=63
8. 7n/8=8. 63
7n=504
7n/7=504/7
n=72
<span>Distance = d miles ; rate = 60 mph ; time = d/60 hrs
distance = d miles ; rate = 50 mph ; time = d/50 hrs
----------------------
Round-trip DATA:
distance = 2d miles ; rate = 55 mph ; time = (2d)/55 hrs
-----------------------------------------------------------
Equation:
Roundtrip time - other time = -1/2 hr
(2d)/55 - [(d/60)+(d/50)] = -1/2
(2d)/55 - [(110d)/(50*60)] = -1/2
---
600(2d) - 11[110d] = -16500
1200d - 1210d = -16500
-10d = -16500
distance = 1650 miles
Hope this helped :)</span>
