How to do a primary school math problem, how to do this elementary school math problem?

A tractor ploughs the land per hour = total amount of work work efficiency = 1 6 divided by 1 3= Second question: 1 ( Seek!

Cultivated land per hour = (1 6) (1 3) = 1 2 (ha).

The time it takes to plough 1 hectare.

t=1 (1 2)=2 (hours).

Let the cultivated land per hour be x and find !!

Pick!!! Accept!!!

1 3*x=1 6 pro-!!

x=1 2 If you set one hectare of arable land, it will take x hours.

x*1/6=1/3

x = 2 hours.

Use one-sixth hectare per hour and one-third of an hour = one-second hectare per hour.

If you find one-third per hectare, one sixth hectare = 2 hours.

1· 1 one-third one-sixth = one-half (ha).

2· 1 1/6 3 = 2 (hours).

18/hectare 2 hours per hour.

1. One-sixth divided by one-third.

2. One-third divided by one

I don't know if it's right or wrong, please forgive me if it's wrong, I'm a third-grader!

It is equal to 60 cm, because 12 6 6 calculates the length of the rightmost inner strip **, and then 18 6 24 calculates the long side of the most rectangle, and then it is known that the short side of the rectangle is 6 cm, so the circumference of the rectangle is equal to the length and width x2 both: (24 + 6) x2 60

(1 12) (2 15) = 5 8, the proportion of seats that should be occupied by the elderly is 1-5 8 = 3 8

The proportion of seats remaining after the elderly person sits down.

Theoretical occupancy ratio of other passengers.

The actual proportion of seats that other passengers can have.

Therefore, in addition to the elderly, there are more than 3 55 people who do not give up their seats, and there will be elderly passengers standing.

Although the writing is a bit complicated, but each step is carefully written, if the exam, this writing can be a full score!!

=289*

I write this more concisely and see it more clearly!