Question

A nickle has a mass of 5 grams while a penny has a mass of 2. 5 grams. What is the mass in kilograms of a bag of coins containing 186 nickles and 72 pennies?.

Answer 1

Answer: 1.11 kg

Explanation:

1 kg = 1000 grams

Nickle has a mass of 5 grams = 0.005 kg

Penny has a mass of 2.5 grams = 0.0025 kg

Now take 0.005 times 186 = 0.93 kg for 186 nickles

Next, take 0.0025 times 72 = 0.18 kg for 72 pennies

0.93 kg + 0.18 kg = 1.11 kg

So the bag is 1.11 kg