What is 25% of 140? 14 30 35 40
2 answers:
Answer: 35
Step-by-step explanation: Well <em>percent</em> means <em>over 100</em> so we can set up an equation for this problem by reading it from left to right.
<em>What</em> means <em>x</em>, <em>is</em> means <em>equals</em>, <em>25%</em> is <em>25/100</em>,
<em>of</em> means <em>times</em>, and <em>250</em> means <em>250</em>.
So we have the equation x = 25/100 · 40.
Simplifying on the right side of the equation,
notice that 25/100 reduces to 1/4.
So we have x = 1/4 · 40.
Think of the 40 as 40/1.
So we can cross-cancel 140 and 4 to 35 and 1
and we have x = (1)(35) over (1)(1) or x = 35.
Now let's check our answer back in the
original problem to see if it makes sense.
We have (35) is 25% of 140.
Well we know that 100% of 140 would be 140.
So 25% of 250 should be a lot less than 140.
So 35 seems to make sense as a pretty good answer.
I have shown my work in the image attached.
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Answer:
Total wrapping papers Serena and her grandmother = 51/10
Step-by-step explanation:
Serena's wrapping paper for parents:
sq meters
Grandmother's wrapping paper:
sq meters
In order to determine the combined wrapping papers for both Serena and grandmother, all we need is to add both.
i.e.
Total papers = Serena's wrapping paper + Grandmother's wrapping paper
Therefore, total wrapping papers Serena and her grandmother = 51/10