A/B is a reduced fraction which can be represented as a
terminating decimal if and only b is of the form 2^n5^n where m and n are non
negative integers. For example: 7/250, the terminating decimal here is 0.028 as
250 as the denominator equals to 2*5^2.
According to the above, we must know whether the denominator
have only 2-s and or 5-s as the prime factors. So,
Q = 8 = 2 ^3 = hence the denominator has only 2 prime
factors. Fraction P/Q will be termed as terminated decimal which is sufficient.
It should take 45 minutes. 18/12=1.5
30 times 1.5 is 45
The answer is B, because the x-axis is the domain, and the max for the domain in 240, so it would have to be less than or equal to 240, but greater than or equal to 0.
Ok. if you want to start with basic mathematics.