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How many seconds are there in 7 days? |
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Answer» Solution :1Day = 24hr, `1 = (24h)/(1day) , 1hr = 60min`, 1 = `(60min)/(1hr) , 1min = 60sec , 1 = (60s)/(1min)` The unit factors can be multiplied in SERIES in ONE step only. `7 Day XX (24h)/(1day) xx (60min)/(1min) xx (60s)/(1min) = 7xx24xx60xx60s = 604800s` |
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