Question
If I can walk a certain distance in 25 days when I rest
8 hours a day, how long will it take me to walk twice as far as if I walk twice as fast and rest twice as long each day?Solution
Walking hours per day = 24 – 8 = 16 hours Total walking hours = 25 ×16 = 400 hours Distance is doubled and speed too. (Both cancel each other) New walking hours (per day) = 24 – 16 = 8 hours ∴ Required Time = 400/8 = 50 days
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which th...
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Conclusions:
I. Some snails being...
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