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Mathematics answers in summer vacation of grade five.
Because the sum of the volumes of the two granaries is the same, the total amount of flour is 43+37 = 80 tons.

So the price difference between granary B and granary A is 1- 1/2 = 1/2 and 1- 1/3 = 2/3 respectively.

It shows that 1/2 of granary B and 2/3 of granary A have the same capacity.

Therefore, the capacity of warehouse B is (2/3)/( 1/2) = 4/3 of that of warehouse A.

Therefore, the capacity of warehouse A is 80/[ 1+(4/3)/2] = 48 tons.

The capacity of warehouse B is 48 * 4/3 = 64 tons.

Solution: Assume that the weekly grazing amount of each cow is 1.

The grazing amount of 27 cows in 6 weeks is 27×6= 162, including both the original grass and the grass in 6 weeks.

The grazing amount of 23 cows in 9 weeks is 23×9= 207, including both the original grass on the pasture and the grass in 9 weeks.

Because there is a certain amount of grass in the pasture, the difference between the above two formulas is 207- 162=45, which is exactly the difference between the amount of grass in 9 weeks and that in 6 weeks. Therefore, the growth of grass per week is 45÷(9-6)= 15.

The original amount of grass on the pasture is 162- 15×6=72, that is, 207- 15×9= 72.

It has been assumed that the amount of grass eaten by each cow per week is 1, and the amount of newly grown grass per week is 15, so the newly grown grass can be eaten by 15 cows. Today, 2 1 cow eats grass, and the remaining 2 1- 15=6 cows eat the original grass on the pasture. The original grass on this pasture is enough for six cows to eat for several weeks, that is, 2 1 cow eats the grass on the pasture. 72÷6= 12 (weeks).

In other words, grazing 2 1 cow can eat up the grass in the pasture 12 weeks.

When the title ship is used along the river (35-5)/2= 15 (hour), the speed along the river =360/ 15=24 (km/hour).

Backward time (35+5)/2=20 (hour) Backward speed =360/20= 18 (km/hour)

So ship speed+water speed =24 (km/h)

Ship speed-water speed = 18 (km/h)

The water speed is 3 km/h, and the ship speed in still water is 21km/h.

The sailing speed in still water is12km per hour.

Downlink speed = 12+3= 15 (km/h) Downlink time =360/ 15=24 (h)

Upstream speed = 12-3=9 (km/h) and upstream time =360/9=40 (h)

Total time 24+40=64 (hours)

So it goes back and forth between two ports at 64: 00.

Reduction method: when the sixth customer buys the remaining half of the fifth time and adds another half, it is equivalent to buying the remaining half and the last half of the fifth time. You cannot use parentheses to synthesize a formula, as follows:

The fifth remainder:1/2/(1-kloc-0//2) =1.

The fourth remainder: (1+1/2)/(1-1/2) = 3.

The third remainder: (3+1/2)/(1-1/2) = 7.

Second remainder: (7+1/2)/(1-1/2) =15.

The first remainder: (15+1/2)/(1-kloc-0//2) = 31.

* * * take: (31+1/2)/(1-1/2) = 63.