Problem 5 · 2012 Math Kangaroo
Easy
Arithmetic & Operations
careful-countingoff-by-one
On the 24th of February 2012 Grandfather’s chicks hatched. February 2012 had 29 days. How old are the chicks today, on the 15th of March 2012?
Show answer
Answer: D — 20 days
Show hints
Hint 1 of 2
Count the days from 24 February up to 15 March.
Still stuck? Show hint 2 →
Hint 2 of 2
Remember February 2012 had 29 days, then add the March days.
Show solution
Approach: count days across the month boundary
- From 24 February to 29 February is 29 - 24 = 5 days.
- From 29 February to 15 March is another 15 days.
- Total age = 5 + 15 = 20 days.
Mark:
· log in to save