Question

Ms. Neha needs to replace the batteries in 20 calculators. Each calculator uses 4 batteries. The batteries are sold in packages of 16. How many packages of batteries does Ms. Neha need to buy?

Answer 1

Neha needs to replace batteries of 20 calculator.
Each calculator uses 4 batteries.
So, batteries used in 20 calculators = 20 × 4 = 80

Batteries sold in a package of 16.
So, packets required for 80 batteries = $\frac{80}{16}$ = 5