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Riddle puzzle: Ratios and proportions

Solve each question. Find your answer in the decoder and write its letter in the box. The letters answer the riddle.

Name

Date

What did the triangle say to the circle?

  1. 1.Are the ratios 4:3 and 12:9 equivalent?
  2. 2.Solve: 2 / 10 = x / 85
  3. 3.Simplify the ratio 9:15. Type it like 3:2.
  4. 4.Which ratio is equivalent to 4:5?
  5. 5.Solve: x / 20 = 9 / 5
  6. 6.Which ratio is equivalent to 1:3?
  7. 7.Which ratio is equivalent to 5:6?
  8. 8.Solve: 3 / 12 = x / 76
  9. 9.Which ratio is equivalent to 3:7?
  10. 10.Which ratio is equivalent to 6:7?
  11. 11.Simplify the ratio 10:15. Type it like 3:2.
  12. 12.Which ratio is equivalent to 6:4?
  13. 13.Solve: 2 / 7 = 18 / n
  14. 14.Solve: 6 / 10 = 12 / y

Decoder

12:14T

x = 19I

15:25X

x = 17O

3:5U

15:35N

YesY

2:6P

n = 63S

x = 27J

x = 36E

2:3L

y = 168Q

10:12O

8:10Z

30:20E

y = 20S

20:25R

The answer to the riddle

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Answer key: Ratios and proportions riddle

What did the triangle say to the circle? You're pointless!

  1. 1. Yes = Y
  2. 2. x = 17 = O
  3. 3. 3:5 = U
  4. 4. 20:25 = R
  5. 5. x = 36 = E
  6. 6. 2:6 = P
  7. 7. 10:12 = O
  8. 8. x = 19 = I
  9. 9. 15:35 = N
  10. 10. 12:14 = T
  11. 11. 2:3 = L
  12. 12. 30:20 = E
  13. 13. n = 63 = S
  14. 14. y = 20 = S

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