1. 18 / 5, 3 / 16 and 7 / 24 The requirement is to divide the three numbers

1. 18 / 5, 3 / 16 and 7 / 24 The requirement is to divide the three numbers

18 out of 5 = (5 × 48) = (18 × 48) = 864 out of 240
3 out of 16 = (16 × 15) = (3 × 15) = 45 out of 240
7 out of 24 = (24 × 10) = (7 × 10) = 70 out of 240

1 / 1 1 / 2 2 / 2 1 / 3 2 / 3 3 / 3 1 / 4 2 / 4 3 / 4 4 / 4?

There are I fractions whose denominator is I
Because 1 + 2 +... + 24 = 300
So the 300th is 24 / 24

I'm learning the score······
The first cup: pour 15 grams of sugar into 100 grams of water. What's the percentage of sugar and what's the percentage of sugar?
The second cup: mixed 100 grams of sugar water, used 15 grams of sugar, sugar is a fraction of sugar water, sugar is a fraction of sugar?
A glass of water is sweeter

The first cup: sugar is 15 / (100 + 15) = 3 / 23 (i.e. 3 / 23),
Sugar is 15 / 100 of water = 3 / 20
Second cup: sugar is 15 / 100 of sugar water = 3 / 20 (i.e. 3 / 2),
Sugar is 15 / (100-15) = 3 / 17 of water
(2) a glass of water is sweeter

Mathematics problems of [grade five]] score (general score)
Three eighths is twenty-one
Two thirds is twenty-four
Four out of seven equals fifty-six ()
Twelve out of seventeen is four out of seventeen

Three eighths is equal to 21 (56)
Two thirds is equal to 24 (36)
Four out of seven equals thirty-two out of fifty-six
Twelve out of 51 is four out of seventeen