If Fred the Squirrel can find one nut in 15 minutes and Jane the Squirrel can find one nut in 12 minutes.
How many whole nuts will they accumulate in a day if they work together.
Bearing in mind their daughter, Teresa, takes 20 minutes to eat a nut and she eats all day long!
Answer: 144 nuts.
Fred finds 4 every hour, Jane finds 5 every hour and Teresa eats 3 every hour, so the total per hour is 6, which is 6 x 24 = 144 in a day. QED.