Part (i)
Answer: m/n
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Explanation:
You divide the total bill over the number of people at the dinner. This leads to the quotient and the amount each person pays (each person pays the same amount).
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Part (ii)
Answer: 80 dollars
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Explanation:
Plug in m = 400 and n = 5 to get
m/n = 400/5 = 80
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Part (iii)
Answer: m = 7x
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Explanation:
x = m/n
x = m/7
7x = m ... multiply both sides by 7
m = 7x
The total bill is 7 times of what each person paid.
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Part (iv)
Answer: 7 people
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Explanation:
x = 20 is the amount each person paid
m = 140 is the total bill
n = number of people who went to dinner
x = m/n
20 = 140/n
20n = 140 ..... multiply both sides by n
n = 140/20 ..... divide both sides by 20
n = 7
Seven friends went to do dinner, splitting a $140 bill, paying $20 each
