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3 years ago

55 is 40% of what number?

2 answers:

6 0

Assume that 40 percent of X is 55
This means X (40 / 100) = 55 
0.4 X = 55 
X = 55 / 0.4 
X = 137.5 
55 is 40 percent of 137.5

galina1969 [7]3 years ago

4 0

Simple just do 55/0.40 and that gets you 137.5
so 40% of 137.5=55 here is the proof 137.5x0.40=55

Answer is 137.5

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

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Mrs. Hong originally had 900 ml of milk

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 $\frac{1}{6}$ of it to bake the waffles, therefore:

Amount used in baking waffles = $\frac{1}{6}x$ ml

2- She used 300 ml to bake a pie

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

Amount left = $\frac{1}{2}x$ 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

$x = \frac{1}{6}x + 300 + \frac{1}{2}x\\ \\x-\frac{1}{6}x-\frac{1}{2}x = 300\\ \\\frac{1}{3}x = 300\\ \\x = 300*3 = 900 ml$

This means that:

She originally had 900 ml of milk

Hope this helps :)

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