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There are two buildings X and Y. Number of floors in building X is 10 less than the number of floors in building Y. Total number of floors is 90. Find the ratio of the total floors in buildings X and Y1. 4 : 52. 2: 63. 5: 94. 3: 55. 7: 8 |
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Answer» Correct Answer - Option 1 : 4 : 5 Given: Total number of floors = 90 Calculation: Let the total number of floors in building Y be a. Number of floors in building X = a - 10 ⇒ a - 10 + a = 90 ⇒ 2a = 100 ⇒ a = 50 number of floors in building X is 40 number of floors in building Y is 50 Required ratio = 40 : 50 4 : 5 |
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