Write the quantity relation according to the condition The water pipe has been repaired 3 / 5 a day 2. A pile of coal uses the remaining 2 / 3 In the question: 11 / 15 times 3 and 3 times 11 / 15 have different meanings, but the results are the same?

Write the quantity relation according to the condition The water pipe has been repaired 3 / 5 a day 2. A pile of coal uses the remaining 2 / 3 In the question: 11 / 15 times 3 and 3 times 11 / 15 have different meanings, but the results are the same?

One day, the water pipe has been repaired 3 / 5. (full length) times 3 / 5 = (repaired) 2. A pile of coal uses the remaining 2 / 3. (the remaining) times 2 / 3 = (used) asking: 11 / 15 times 3 and 3 times 11 / 15 have different meanings, but the result is the same

Write the quantity relation according to the condition
1. The number of cocks is 40% of that of hens
（）×40%=（）
（）×（1+40%）=（）
2. The speed of a is 20% faster than that of B
（）×20%=（）
（）×（1+20%）=（）
3. The output of this year is 10% lower than that of last year
（）×10%=（）
（）×（1-10%）=（）

1. The number of cocks is 40% of the number of hens. (number of hens) × 40% = (number of cocks) (number of hens) × (1 + 40%) = (total number of chickens) 2. The speed of a is 20% faster than that of B. (speed of B) × 20% = (speed of a is faster than that of B) (speed of B) × (1 + 20%) = (speed of a) 3