1.2 One fifth of the simplified scale: 25:6 Scale: 25 of 6.

3/8: 1/2 Simplified ratio: 3:4 ratio: 0.75

2. A peanut kernel, 600 kg can squeeze out 240 kg of peanut oil. Write the mass ratio of peanut oil to peanut kernel and simplify it.

240:600=2:5

3. Prepare a dose of liquid medicine, and add 2500 ml of water to every 50 ml of liquid medicine. Write down the volume ratio of medicament to water and simplify it.

50:2500= 1:50

The diameter of a circle is 100 cm. Write the ratio of the circumference to the diameter of this circle and simplify it.

3 14: 100= 157:50

5. There are three kinds of sugar water, and the sugar content is as follows:

A: add 2 kilograms of sugar to A:26 kilograms;

B: 1 kg sugar and 6 kg water;

C: 30 grams of water and 5 grams of sugar.

Which two kinds of sugar water do you think are as sweet? Please write down your reasons.

A: The ratio of sugar to water is 2:26= 1: 13.

B: The ratio of sugar to water is 1:6.

C: The ratio of sugar to water is 5:30= 1:6.

So b is as sweet as c.