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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 6 - Mathematics
7.20 Find A:B:C from A:B and B:C

Example:
If A:B = 6:5 and B:C = 4:1, find A:B:C.
In the given ratios "B" is the common term, and the values of B in both ratios are not equal. To make them equal, find the L.C.M. of values corresponding to B i.e., 5 and 4.
L.C.M. of 5 and 4 = 20
Therefore, A:B = 6:5 = 6x4:5x4 = 24:20.
B:C = 4:1 = 4x5:1x5 = 20:5.
Therefore, A:B:C = 24:20:5.

Directions: Solve the following problems. Do not simplify your answer. Also write at least ten examples of your own.
Q 1: If A:B = 1/2:1/3 and B:C = 1/3:1/4, find A:B:C. (Hint: Write the answer in natural numbers.)
Answer:

Q 2: If A:B = 7:8 and B:C = 4:9, find A:B:C.
Answer:

Q 3: If A:B = 5:6 and B:C = 6:7, find A:B:C.
Answer:

Q 4: If A:B = 1 2/5:1 3/4 and B:C = 2 1/3:3 1/4, find A:B:C. (Hint: Write the answer in natural numbers.)
Answer:

Q 5: If A:B = 2:3 and B:C = 9:5, find A:B:C.
Answer:

Q 6: If A:B = 3/5:5/7 and B:C = 3/4:2/5, find A:B:C. (Hint: Write the answer in natural numbers.)
Answer:

Q 7: If A:B = 2:20 and B:C = 20:30, find A:B:C.
Answer:

Q 8: If A:B = 3:4 and B:C = 4:5, find A:B:C.
Answer:

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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