There are several methods of rounding, but in this case the 'best' one is probably to round up. Rounding down suggests that Kathy actually ran faster.
<span>26.2 (mile) * 6.2 (minutes/mile) = 162.44 rounded up => 163 minutes.</span>
Santosh must sell the remaining dotpens with a surplus of 40 % to gain 10 % on the whole.
<h3>How to calculate the gain of selling dotpens</h3>
We know that Santosh sold 200 dotpens with a loss of 5 % and he must sell the remaining dotpens with an unknown surplus in order to obtain 10 % of the whole. The situation can be represented by the following expression:
(1)
Santosh must sell the remaining dotpens with a surplus of 40 % to gain 10 % on the whole.
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Aaron is 30 years old, and his son is 10.
10 * 3 = 30
In ten years, he will be 40, and his son will be 20.
20 * 2 = 40
The applicable decay formula is:N = No*e^(-kt)WhereN = Mass left after time tNo = Original massk = constantt = half lifeUsing the values given,N/No = e^(-0.1446t) = 1/2ln (1/2) = -0.1446 t *ln e^1-0.6931 = -0.1446 tt = 0.6331/0.1446 = 4.79 daysTherefore, half-life is 4.8 days.