A man's age and his wife's age are in the ratio of 5:4. In 5 years, this ratio will change to 11:9. If their age ratio at the time of marriage was 6:4, how many years ago did they get married?
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This is exactly what I needed to practice
thankss
thanks, this one tripped me up at first because I forgot to actually solve for their current ages before jumping to the marriage part
same lol, I tried to go straight to the 6:4 ratio and got nowhere. you have to nail down the present ages first
the 11:9 in 5 years is the key move. once you get their current ages the 6:4 part is basically free
right? I kept second-guessing whether the 5 years applied to both of them, but obviously it does
wait why is (D) 16 wrong? I got a number close to that somewhere and now I'm confused
check your present ages again, I think 16 comes from a slip when you set up the difference. the ratio at marriage should give you a clean number
solid question, medium difficulty. the two-step setup (present ages, then back to marriage) is what makes it worth doing carefully
What it tests
Your ability to convert between fractions, ratios, and decimals and to reason proportionally.
Common trap
Cross-multiplying incorrectly or mixing up the ratio parts — a part:part ratio is not a fraction of the whole.