Question

William bought a 0.5 -liter bottle of liquid plant food. He uses 40 milliliters each week? How much plant food does William need for 12 weeks? Is one bottle enough for 12 weeks ?

Answer 1

He needs 0.48 liters of plant food.

Yes, one bottle is enough for 12 weeks.

Explanation:

William uses 40 mililiters each week.

Let be
`x` the total amount of liquid plant food he needs for 12 weeks. It can be calculated by multiplying 12 by 0.40 mililiters. Then:

`x=(12)(40mL)\\x=480mL`

Make the conversion from mililters to liters (Remember that 1 liter has 1,000 mililiters):

`(480mL)((1L)/(1,000mL))=0.48L`

Then, he needs for 12 weeks:

`x=0.48L`

As he bought a 0.5 -liter bottle of liquid plant food and he needs 0.48 liters for 12 weeks, you can conclude that one bottle is enough for 12 weeks.