Question 985367: The monthly incomes of Peter and Paul are in the ratio of 4 3. Their expenses are in the ratio of 3 2. If each saves R 6,000 at the end of the month, their monthly incomes respectively are (in R)
(a 24,000 and 18,
(b 28,000 and
(c) 32.000 and 24
(d) 34,000 and 26
Answer by vleith(2983)   (Show Source):
You can put this solution on YOUR website! I will assume answer B left off a 21
First step, see which potential solutions meet the income ratio.
Which incomes are in a ratio of 4:3??
A B and C meet that requirement.
Given three options, you are told both gentlemen save 6000 after their expenses.
For option A, in order to save 6000 on an income of 18000, Paul would have expenses of 12000. You are told the ratio of expenses is 3:2. That says Peter must have 18000R expenses. Subtract Peter's expenses from his 24000R income. Is that equal to 6000? Yes. So A is an answer.
Now use that same logic on options B and C to see if they, too, are solutions.
You can do this!
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