麻烦回答一下几道英文数学题。有加分！

Question

麻烦写一下每道题的翻译啦。然后再简单写一下解题过程。谢谢大家啦！

1、if the product of two positive integers is a prime number what must be the value of the smaller integer?

high tide
2、a mark M, on a cliff is 1.96m below sea level at high tide .at low tide the sea level is 4.18m lower than at high tide.
————————|
| 1.96m
M *
|
———————— |
low tide
问题是：at a certain time the sea level is exactly half way between high tide and low tide .how far is the sea level below M at this time?

3、the number 168 and 324,written as the products of thier prime factors ,are
168=2^3 * 3 * 7 324=2^3 * 3^4
问题：the smallest positive integer value of n for which 168n is a multiple of 324?

4、it is required ti find a rational number which is equal to the recurring decimal number 0.73737373……
问题：hence express 0.737373……in the form a/b where a and b are integers?

5、find, in its simplest form, the fraction which is exactly halfway between 13/17 and 14/17?

6、each of the 50 seats at the front of a cinema sells for half the price of one of the remaining seats . there are 200seats altogether and when every seat is sold the takings are $525.
问题：find the price of a seat at the front of the cinema.

7、an athlete walks a distance of 1 km at an average speed of 6 km/h and then,without stopping, runs further distance of 800 meters in 2minutes.
问题：his average speed for the whole journey in km/h.

问题可能有点多，但是应该都不是太难。第二题的图是自己打上去的，大家凑合一下哈。辛苦大家了。！谢谢谢谢。记得写一下汉语翻译哈。谢谢谢谢！

Answer 1

1. 两个正整数的积是质数，其中二者较小的是哪个?
是 1

2. 悬崖上有个记号M, 潮水位最高时，M低于海面1.96m。潮水位最低时，海面低于最高水位4.18m。某时刻，海面在最高和最低水位正中间，此时海面比M低多少?
M is 4.18 - 1.96 = 2.22 m above low tide (M 比最低水位高2.22m)
Sea level exactly half way between high tide and low tide: sea level is 4.18/2 = 2.09 m (海面在最高和最低水位正中间时, 海面比最低水位高2.09m)
above low tide, so this sea level is 2.22 - 2.09 = 0.13 m below point M (海面比M低0.13m)

3. 168, 324分解质因数可以表达为
168=2^3 * 3 * 7 324=2^3 * 3^4
找出最小正整数n使168n是324的倍数.
Their smallest common multiple is 2^3 * 3^4 * 7 (168, 324最小公倍数是可以表达为2^3 * 3^4 * 7)
n = 2^3 * 3^4 * 7/(2^3 * 3 * 7) = 3^3 = 27

4. 有理数可以写成无限循还小数，将写成a/b的形式, a,b是整数
0.73737373 = x (x 是分数)
两边乘100:
73.73737373 = 73 + x = 100x
99x = 73
x = 73/99

5. 找出13/17, 14/17正中间的最简分数
(13/17 + 14/17)/2 = 27/34

6. 剧院第一排有50个座，票价是其他排座位的一半。剧院共有200个座位，所有座位都卖完时共得525元. 第一排每个座多少钱?
Assume the price of a front seat is $x. (第一排每个座x元)
50x + (200-50)x = 525
x = 1.5

7. 一个运动员以6km/h (1小时6千米)的速度走了1km，紧接在2分钟内跑了800米，全程平均速度是多少km/h?
Total distance: 1 + 0.8 = 1.8 km (总距离)
Total time: 1/6 + 2/60 = 1/5 = 0.2 h (总时间)
average speed: 1.8/0.2 = 9.0 km/h (平均速度)

Answer 2

1