Keith is saving money for a car. He has saved the same amount each year for the past three years, and records of how much he has
at the end of each year in the table below.
What is Keith's unit rate of change of dollars with respect to time; that is; how much does Keith save in one year?
the unit rate is blank dollar per year.
What is Keith's unit rate of change of dollars with respect to time; that is; how much does Keith save in one year?
the unit rate is blank dollar per year.
2 answers:
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Constraint 1:
Let the total number of running shoes be = R
Let the total number of leather boots be = L
As the given number of total shoes are 48,
The equations becomes,
R + L = 48............(1)
Constraint 2:
As running shoes are twice the leather boots, equation becomes,
R = 2L..............(2)
Putting the value of R from equation(2) in equation (1)
Now putting the value of L in equation(2)
R= 2L
R =
R=32
Hence, Amanda needs 16 pairs of leather boots and 32 pairs of running shoes.