Question

Help me please. I dont get this.

Answer 1

Answer:

6. 19 candles

7. 6 pills

Step-by-step explanation:

6.  If a particular candle burns for 2 3/4 hours (=2.75) and you want to use similar candles to burn one at a time over 10 days for 5 hours each day, find the total number of hours:  10 x 5 = 50 hours.  Then, divide by the amount of time it takes for one candle to burn: 10÷2.75 = 18.18.  Since the answer is a decimal, you will need to round to the next whole number = 19 candles.

7.  Given the rules that no more than three pills may be taken in a four-hour period and each pill must be taken 1 1/2 hours (=1.5) apart, you can take the total number of hours (10) and divide by the time between each pill (1.5):

10 ÷ 1.5 = 6.7

Since you won't take part of a pill, the most you can take is 6 and because the intervals are 1.5 hours, 1.5 + 1.5 + 1.5 = 4.5, you will not have taken more than 3 in any four hour period.