Question

Need an explanation

It takes 15 minutes for all of the sand to flow through a sand timer. The sand timer contains 475 grams of sand. Each millilitre of sand weighs 1.5 grams. How many millilitres of sand flow through the timer per minute?
​

Answer 1

Explanation:

To solve the problem, we need to find the total volume of sand that flows through the timer in 15 minutes, and then divide it by 15 to find the volume per minute.

First, let's find the total weight of the sand in grams:

475 grams

Next, we can convert the weight to volume by dividing by the weight of one milliliter of sand:

475 grams ÷ 1.5 grams/mL = 316.67 mL

So 316.67 mL of sand flows through the timer in 15 minutes. To find the volume per minute, we divide by 15:

316.67 mL ÷ 15 minutes = 21.11 mL/minute

Therefore, 21.11 millilitres of sand flow through the timer per minute.