Amar is an electrician. He bought bundles of an electric cable where each bundle had m of cable. (1) Find the total length of the cable purchased by Amar. 1. 1427 m 2. 1521 m 3. 1605 m 4. 1717 m (2) If the cost of cable is ₹ per metre, find the amount paid by Amar. 1. ₹8830 2. ₹9520 3. ₹10140 4. ₹11280 (3) Amar used bundles of cable for electric connections in the top floor of the building. What length of cable was used for the top floor ? 1. 476 m 2. 507 m 3. 625 m 4. 712 m (4) Amar cut a length of m from a bundle and divided the remaining cable of this bundle into pieces of 21 m, length each. How many pieces of 21 m did he get from this bundle ? 1. 9 2. 10 3. 11 4. 12

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KnowledgeBoat · Accepted Answer

(1) Given: Total bundles = Length per bundle = m Total length of the cable purchased = (Total bundles) x (Length per bundle) Substituting the values in above, we get: Total length of the cable purchased = x m = x m = x m = 1521 m Hence, option 2 is the correct option. (2) The cost of cable per meter = ₹ Given Total length of the cable = 1521 m [From previous step] The amount paid by Amar = (Cost of cable per meter) x (Total length of the cable) Substituting the values in above, we get: The amount paid by Amar = ₹ x 1521 m = ₹20 x 507 = ₹10140 Hence, option 3 is the correct option. (3) Given: Bundles of cable used for the top floor = Length per bundle = m Length of cable used for the top floor = (Bundles of cable used for the top floor) x (Length per bundle) Substituting the values in above, we get: Length of cable used for the top floor = x m = 507 m Hence, option 2 is the correct option. (4) Given: Length of one bundle = m Cut length = m = m Remaining length = (Length of one bundle - Cut length) Substituting the values in above, we get: Remaining length = m = m = m = 189 m Number of pieces of 21 m length = Remaining length ÷ 21 Substituting the values in above, we get: Number of pieces of 21 m length = 189 m ÷ 21 = = 9 Hence, option 1 is the correct option.

Mathematics

Fractions

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