SOLUTION: how many numbers up to 200 are divisible by 5 and 7 together

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Question 1119994: how many numbers up to 200 are divisible by 5 and 7 together
Found 2 solutions by ikleyn, solver91311:
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
35, 70, 105, 140, 175.    <<<---=== Those and only those that are multiple of 5*7 = 35.


Count them !


Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Divide 200 by 35 and then round DOWN. In order for a number to be divisible by both 5 and 7, it must be divisible by the product of 5 and 7, namely 35.


John

My calculator said it, I believe it, that settles it