Question

Fea can fill air in the balloons at the rate of $14$ milliliters per second (mL/s). Estimate the volume of air filled in the balloons by Fea in $3$ minutes.

• A. $500$ mL
• B. $1,000$ mL
• C. $1,500$ mL
• D. $2,000$ mL

Answer 1

The correct option is D $2,000$ mL

To find the estimated volume of air filled in $1$ second in the balloons, we will round off $14$.
Estimated volume of air filled in $1$ second $\approx 10$ mL

$1min=60s$
Duration for which the air is filled inside the balloons $=3\times 60=180s$
Estimated duration of filling $\approx 200s$

Estimated volume of air filled in total $\approx 10\times 200=2,000mL$

Hence, option D is correct.