If a ballpoint pen weighs 40 grams , what is the weight in kilograms of a box of 500 pens?

Question

The alternatives are as follows a. 20kg, b. 200kg, c.20,000kg, c. 2kg.

Answer 1

first, calculate the weight (in garams) of 500 pens.

next, to convert to kg, multiply by 10^-3