Question

Mary makes $15$ paintings in $3$ hours and Bary makes $12$ paintings in $2$ hours. Who can make a painting faster?

• A. Bary
• B. Mary

Answer 1

The correct option is A Bary

Time taken by Mary to finish 15 paintaing $=3$ hours $=3\times 60=180$ minutes

Time taken by Mary to make one painting $=\frac{180}{15}=\frac{36\times 5}{3\times 5}=12\text{minutes}$

Time taken by Bary for 12 paintings $=2\text{hours}=2\times 60=120$ minutes

Time taken by Bary to make one painting $=\frac{120}{12}=10\text{minutes}$

Since Mary takes $12$ minutes and Bary takes $10$ minutes for creating one painting, Bary is the faster.
Option (a) is correct.