FORTNIGHT'S PUZZLE 15

PUZZLE 15: 10th-16th May (to be e-mailed by the 17th May)
POSTED BY IES CAMPANAR

AT THE CIRCUS
The most experienced trainer of a circus needs 40 minutes to wash an elephant, his son doing the same task in 2 hours. How long will it take them both to wash 4 elephants? How many elephants will each of them wash?

SOLUTION TO PUZZLE 2
In two hours the son washes one elephant while his father washes 120:40 =3 elephants in the same period of time.
Thus it takes them 2 hours to wash 4 elephants since the son washes 1 while his father washes 3.