If the amount she saved was $6 for 20%, then the formula for finding savings would be cost*percentage.
But if you want to find the original cost, then you play with the current formula until you get this. $6/20%. Have a good one :)
Answer:
x=20
Step-by-step explanation:
4x +10 = 90
-10 from both sides
that gives you 4x=80
80 divided by 4 gives you 20=x
The uphill part of the ride would have taken 16 minutes and 40 seconds.
This can be found first by determining how many miles Lauren went during the downhill portion. This can be found by multiplying the speed by the time.
5mph * .5hrs = 2 1/2 miles.
Now we can determine how far she needs to go during the uphill portion by subtracting the downhill portion from the entire ride.
3 1/3 miles - 2 1/2 miles = 5/6 miles.
Now that we know she needs to go 5/6 miles for the uphill portion, we can divide the distance by the speed.
5/6 miles / 3 mile per hour = 5/18 hours = 16.67 mins or 16 mins and 40 seconds.
