A seamstress has three colours of ribbon; the red is 126cm, the blue is 196cm and the green is 378cm long. She wants to cut them up so they are all the same length, with no ribbon wasted. What is the greatest length, in cm, that she can make the ribbons?
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Answer:
The answer is 14 cm.
Step-by-step explanation:
The greatest length is the HCF (highest common factor) of all three ribbons.
Upon calculating we see that the HCF is 14 cm.
Hence, the greatest length the ribbon can be cut, so that the length is same, is 14 cm
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