Question

Black ink cartridges cost $28.95 each. Which is the best estimate of the number of cartridges you can buy for $600? (6th-grade math)

A. 2
B. 3
C. 20
D. 30

Answer 1

To estimate the number of cartridges, round the price of a cartridge to $30 and divide $600 by this amount. The best estimate is 20 cartridges for $600. The answer is option C. 20.

Step-by-step explanation:

To estimate the number of black ink cartridges you can buy for $600, use the following steps:

1. First, round the price of one black ink cartridge to a convenient number. Since the cartridge costs $28.95, we can round it to $30 for easier calculations.
2. Next, divide the total amount of money by the rounded price of one cartridge: $600 ÷ $30 = 20.
3. Therefore, the best estimate for the number of cartridges you can buy for $600 is 20.

The answer is option C. 20.