How about this one?


Jon has 1120 apples and oranges. 20% of apples and 5% of oranges make up 146 of the fruits. How many apples are there?

is Orange = 20 units?

Ender:

The question wasn't clear as to whether it want the number of women at the party at first or in the end. Assumming it's at first, yes, 48 is the answer

yes, at first. Sorry. I didnt type correctly. Thank you Ender. You are bringing back some confidence in me. Thank you.

Ender:

angel:

There were 120 people at a party. 25% of women and 2/3 of men left the party. There were 60 people left at the party. How many women were there at the party?

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Can I take 25% as 1 unit?

That's one idea .
From the questions, we get the idea that women can be divided by 4 units, and the men can be divided by 3 units.

Hence I would let women be 4W, and men be 3M.

4W + 3M = 120
3W + 1M = 60

Find W and you will be able to find the number of women at the party at first, which is 4W.

IS the answer 48?

There were 120 people at a party. 25% of women and 2/3 of men left the party. There were 60 people left at the party. How many women were there at the party?

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Can I take 25% as 1 unit?

There were 381 people in a school hall. When 3/4 of the boys and 7/9 of the girls left the school hall, the total number of pupils who remained became 93. How many boys and how many girls left the school hall?

2 notebooks cost as much as 3 pens. If each notebook cost 60cts more than each pen,

a) how much does a pen cost?
b) what is the total cost of 2 notebooks and 3 pens?

A + A + B = 23

A + B + B = 16
Find A.

There were total 360 boys and girls in a hall. 1/2 of girls and 1/4 of boys left the hall. Given 220 children remained in the hall, how many boys were there in the hall at first ?

Thank you very much!

So sorry… I still can’t cross over the first part. Mental block… hahahha…

Ok, why do you divide by 3? (60/3)?