Bob spent $64 for two shirts, including tax. The difference between the costs of the shirts was $16. Write two equations that yo
2 answers:
Answer:
The cost of the shirts are $40 and $24
Step-by-step explanation:
Let
x ----> the cost of one shirt
y ----> the cost of the other shirt
we know that
----> equation A
I assume that the cost x is greater than the cost y
so
---->
---> equation B
solve the system by substitution
substitute equation B in equation A
solve for y
Find the value of x
---->
therefore
The cost of the shirts are $40 and $24
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Answer:
Step-by-step explanation:
Since Gloria cannot pay for each minute talked but for packages of 200 minutes at the rate of $25 each, we have to make calculations according to these conditions as follows:
Month 1:
Gloria talked on her cell phone for . So, she had to buy 2 packages of
for
each package.
Hence:
Month 2:
Gloria talked on her cell phone for . So, she had to buy again 2 packages of
for
each package.
Hence:
Month 3:
Gloria talked on her cell phone for . So, she had to buy 3 packages of
for
each package.
Hence:
Then, if we take the total Gloria had to pay for the frist three months, we have: