Question

After 1/4 hour there are about 7 mg of medicine left. After 3/4 hour there are about 3,5

mg of medicine left. About how many mg of medicine are left after 1 3/4 hours? Explain
how you know.

Answer 1

1.5

Explanation:

From comparing the difference in the amounts of medicine in 1/4 and 3/4, we can see that 1.5 mg is taken away every 1/4 hours. Why you may ask? This is because the scenario said 3/4, not 2/4. 1.5 + 1.5 is 3.5. So, with that, we can say without any hours, there was originally 8.5 mg. Then we minus that by 1.5 7 times, as 1 and 3/4 = 7/4, and get our answer, 1.5. Hope this helped!