Answer:
1200 ml per hour
Step-by-step explanation:
To compute what rate is 300 ml over 15 mins as a rate of ml per hour, we do a rule of 3, using a variable x as that amount of ml we don't know yet. We should have everything in the same units, so instead of writing 1 hour we write 60 minutes:
Now we solve for x:
And so, now that we know the value of x, the rate we wanted to find is
Which is just 1200 ml per hour.
If he is selling shovels at $19 each, the answer of $153 would be incorrect. If you take $153 and divide that by 8 (shovels) you will get each shovel being a price of $19.125 each.
The overall answer of $153 could be reasonable but the overall price from selling 8 shovels will actually be $154 not $153.
C. If there is 23 people you would multiply x (the price) by 23. Since we know the price the expression is 17 x 23.
Answer:
C.
-633
Step-by-step explanation:
