22. Abhishek lives x floors above the ground floor of a high rise building. It takes him 30 seconds per floor to walk down the steps and 2 second per floor to ride the elevator. It takes Abhishek the same amount of time to walk down the steps to the ground floor as to wait for the elevator for 7 minutes and ride down. Then x equals

(a) 7

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(b)14

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(d)16

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Solution

The correct option is C (c)15
Ans: (c)
Sol: Given, x
30x=420sec+2x
28x=420
x=15

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The correct option is C (c)15 Ans: (c) Sol: Given, x 30x=420sec+2x 28x=420 x=15

The correct option is C (c)15
Ans: (c)
Sol: Given, x
30x=420sec+2x
28x=420
x=15