Answer:
13
Step-by-step explanation:
32-2=30
30+7=37
50-37=13
SOLUTIONS
Solve a given equations or algebraic symbols?
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(A)
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(B)
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(C)
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(D)
Answer:
Look its been a min since I done math the unit selling price &.2.50 rite and the unit costs is $1.00 what is maintained gross margin percentage increase.0.25 be will it be the same selling price
Step-by-step explanation:
<span>Chris' average speed is 3.5mph:
Lets take Chris' brother speed = B
then Chris speed = (B+ 1) mph-------given in the question
and:
The average speed for covering 18 miles= chris' average speed + his brother's
average speed = (B+ 1) + B
since Speed = Distance covered / time taken
then average speed for 18 miles can also be found by: 18 miles/3 hours = 6 miles per hour
then we have; (B+ 1) + B = 6mph
(B +1) = (6-B)
B+B = 6-1=5
2B=5
B=5/2=2.5 mph (this is Chris' brother average speed)
Hence Chris' average speed is = B+1= 2.5+1= 3.5mph</span>