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Months and Years

Stage: 4 Short Challenge Level: Challenge Level:2 Challenge Level:2
See all short problems arranged by curriculum topic in the short problems collection

The product of Mary's age in years on her last birthday and her age now in complete months is 1800.

How old was Mary on her last birthday?

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.  

This problem is taken from the UKMT Mathematical Challenges.