Question

Mrs Hong had some milk. She used of it to bake some waffles and

300 ml to bake a pie. After baking the waffles and the pie, she had of
the milk left. How much milk did Mrs Hong have at first?
afhes
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Answer 1

Mrs. Hong originally had 900 ml of milk

Step-by-step explanation:

The complete question is in the attached image

Assume that the amount of milk Mrs. Hong originally had was x ml

We are given that:

1- She used
`(1)/(6)` of it to bake the waffles, therefore:

Amount used in baking waffles =
`(1)/(6)x` ml

2- She used 300 ml to bake a pie

3- Amount left is half the original amount, therefore:

Amount left =
`(1)/(2)x` ml

We know that:

Total amount = amount used in waffles + amount used in pie + amount left

Substitute with the givens and solve for x:

Total amount = amount used in waffles + amount used in pie + amount left

`x = (1)/(6)x + 300 + (1)/(2)x\\  \\x-(1)/(6)x-(1)/(2)x = 300\\   \\(1)/(3)x = 300\\  \\x = 300*3 = 900 ml`

This means that:

She originally had 900 ml of milk

Hope this helps :)