1)what is the smallest integer greater than 1 that leaves a remainder of 1 when divided by any of the integers 8,9, and 10?

2) The square root of the difference of (B^2 /16) and (b^2/25)

3) Mr. Baker is 30 years old when his son is 4 years old. In how many years will Mr. Baker be five times as old as his son.
^I got 2 and 1/2

1 answer

LCM(8,9,10) = 360
so, 361 will leave a remainder of 1 when divided by any of 8,9,10

(b^2/16)-(b^2/25) = 9b^2/400
so, the root is 3b/10

I agree with you on #3, but it's strange that the answer is not a whole number.