Mamta takes 30 seconds to climb up the stairs. If in a day she climbs 4 times, she spends ____ minutes Option A. 120 Option B. 2 Option C. 12 Option D. 34
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Solution
She takes 30 seconds to climb up the stairs. If she climbs 4 times, Total time = 30×4 seconds = 120 seconds = 120/60 minutes = 2 minutes