Answer: [tex]1.9\times 10^2pound[/tex]
Explanation: Given 0.45 kg = 1 pound
Thus if 0.45 kg is equal to= 1 pound
87 kg will be equal to=[tex]\frac{1}{0.45}\times 87=1.9\times 10^2pound[/tex]
The number of significant digits in an answer should be equal to the least number of significant digits in any one of the numbers being multiplied, divided etc. Thus the answer should contain 2 significant digits.
