Question

Arwen uses a dropper that produces drops that have a volume of 1/8 mL to fill a 30-mL test tube. How many drops does it take to fill the test tube?

Answer 1

`color(maroon)("240 drops it requires to fill the test tube"`

Explanation:

`"Total volume to be filled " = 30 ml`

`"Volume of one drop " = (1/8) ml`

`"No. of drops required to fill the test tube " = 30 / (1/8)`

`=> (30 * 8 ) / 1 = 240 " " drops`