Solve a series of problems in mathematics!

1 and 1 area of trademark paper = (17 * 22+1* 22) * 2 =1232cm2.

2. Iron sheet area (cookie box with lid) = (17 * 22+1* 22+17 *1) * 2 =1606 cm2 = 65438.

Iron sheet area (without cover) = (17 * 22+1* 22) * 2+17 *1=14/kloc.

317 *11* 22 = 4114 cubic centimeter

2. I ate 40*2/5= 16 in the first week and (40- 16)*3/4= 18 in the second week.

So I ate more in the second week and ate 18- 16=2 pieces.

3. Cement quality =180 *1(1+3+5) = 20 tons of yellow sand quality =180 * 3/(1+3+5) = 60 tons.

Stone quality = 180-20-60= 100 ton yellow sand tonnage is equivalent to the percentage of stone tonnage =60/ 100* 100%=60%.

4. Solution: If 1 pencil is X yuan, then 1 pen is 6x yuan.

4x+6x= 12

Solution: x= 1.2

So 6x=7.2.

Answer: Pencil unit price 1.2 yuan, pen unit price 7.2 yuan.

5. The spare disk [1]c is 9.75g * (1-80%) =1.95g >1.5g E disk spare1.52g */kloc.

So it should be on disk C.

[2] One minute download =20%/4=5%, then a * * * needs 100%/5%=20 minutes.

It takes 20-4= 16 minutes.