A rope is (8a – b) metres long. A length of (3a + b) is cut out of it. How much rope is left?

(5a + 2b) metres

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5a metres

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(5a – b) metres

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(5a – 2b) metres

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Solution

The correct option is D
(5a – 2b) metres

The rope is (8a – b) metres long

Length of rope left = (8a – b ) – (3a + b)

= 8a – b – 3a – b = 5a – 2b

= (5a-2b) metres of the rope is left

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