Mr. Lim has some pens. If he ties them in bundles of 7, he will have 2 extra pens. If he ties them in bundles of 10, he would be short of 3 pens. What is the smallest possible number of pens Mr. Lim has?
Multiples of 7: 7, 14, 21, 28, 35
Multiples of 7 (+2): 9, 16, 23, 30, 37
Multiples of 10: 10, 20, 30, 40
Multiples of 10 (-3): 7, 17, 27, 37
Smallest possible number of pens that Mr. Lim has = 37
Answer(s): 37
