Mr. Cheong has some notebooks. If he ties them in bundles of 7, he will have 4 extra notebooks. If he ties them in bundles of 10, he would be short of 3 notebooks. What is the smallest possible number of notebooks Mr. Cheong has?
Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63
Multiples of 7 (+4): 11, 18, 25, 32, 39, 46, 53, 60, 67
Multiples of 10: 10, 20, 30, 40, 50, 60, 70
Multiples of 10 (-3): 7, 17, 27, 37, 47, 57, 67
Smallest possible number of notebooks that Mr. Cheong has = 67
Answer(s): 67
