X=4. 4/2=2 and 8/4=2 making the equations equal
When reading a question, you need to be aware of the numbers presented and the facts. You need to pay attention to the question - what, when, where, how, why or how much. What is being asked in the question is always your clue. Unnecessary information will be eliminated once you understand the question.
Simple example from a Business book:
Jessica Fernandez, manager of Subway, had a bank balance of $5382.12 on March 1. During March, she deposited $60,375.82 received from sales, $3280.18 received as credits from suppliers, and $75.53 as a county tax refund. She paid out $27,282.75 to suppliers, $4280.83 for rent and utilities, and $12,252.23 for salaries and miscellaneous. How much did Fernandez deposit in March?
Answer:
$60,375.82 (sales) + $3280.18 (credits) + $75.53 (refund) = $63,731.53
Fernandez deposit $63,731.53 in March.
The question immediately lead you to the sentence that is the key to the answer.
It is pretty obvious but try to recognize the important facts from the rest.
The question did not ask about Jessica's balance on March 1 or did not ask about how much she pay out. You can immediately eliminate that those information are not necessary to the problem being asked. The question is how much did she deposit in March. You need to find the sentence that points out the answer - During March, she deposited $60,375.82 received from sales, $3280.18 received as credits from suppliers, and $75.53 as a county tax refund. List all the numbers and add them together and you will come up with the figures she deposited. It is just a simple question but it presented the technique for the elimination process of unnecessary facts. It is not "we cannot see the answer" but the truth is we cannot see and understand the question.
y=mx+b
since the b is 0, the formula is y= -3x
Let
be the weight of i-th player.
1. If the mean weight of 4 backfield members on the football team is 221 lb, then
![\dfrac{x_1+x_2+x_3+x_4}{4}=221\ lb.](https://tex.z-dn.net/?f=%5Cdfrac%7Bx_1%2Bx_2%2Bx_3%2Bx_4%7D%7B4%7D%3D221%5C%20lb.)
2. If the mean weight of the 7 other players is 202 lb, then
![\dfrac{x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}}{7}=202\ lb.](https://tex.z-dn.net/?f=%5Cdfrac%7Bx_5%2Bx_6%2Bx_7%2Bx_8%2Bx_9%2Bx_%7B10%7D%2Bx_%7B11%7D%7D%7B7%7D%3D202%5C%20lb.)
3. From the previous statements you have that
![x_1+x_2+x_3+x_4=221\cdot 4=884 \lb,\\ \\x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}=202\cdot 7=1414\ lb.](https://tex.z-dn.net/?f=x_1%2Bx_2%2Bx_3%2Bx_4%3D221%5Ccdot%204%3D884%20%5Clb%2C%5C%5C%20%5C%5Cx_5%2Bx_6%2Bx_7%2Bx_8%2Bx_9%2Bx_%7B10%7D%2Bx_%7B11%7D%3D202%5Ccdot%207%3D1414%5C%20lb.)
Add these two equalities and then divide by 11:
![x_1+x_2+x_3+x_4+x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}=884+1414=2298\ lb,\\ \\\dfrac{x_1+x_2+x_3+x_4+x_5+x_6+x_7+x_8+x_9+x_{10}+x_{11}}{11}=\dfrac{2298}{11}=208\dfrac{10}{11}\ lb.](https://tex.z-dn.net/?f=x_1%2Bx_2%2Bx_3%2Bx_4%2Bx_5%2Bx_6%2Bx_7%2Bx_8%2Bx_9%2Bx_%7B10%7D%2Bx_%7B11%7D%3D884%2B1414%3D2298%5C%20lb%2C%5C%5C%20%5C%5C%5Cdfrac%7Bx_1%2Bx_2%2Bx_3%2Bx_4%2Bx_5%2Bx_6%2Bx_7%2Bx_8%2Bx_9%2Bx_%7B10%7D%2Bx_%7B11%7D%7D%7B11%7D%3D%5Cdfrac%7B2298%7D%7B11%7D%3D208%5Cdfrac%7B10%7D%7B11%7D%5C%20lb.)
Answer: the mean weight of the 11-person team is ![208\dfrac{10}{11}\ lb.](https://tex.z-dn.net/?f=208%5Cdfrac%7B10%7D%7B11%7D%5C%20lb.)
Answer:
Either B or D.
Step-by-step explanation:
I consider both options valid. It all depends on how the employer is keeping track of time, ie if the pay "ticks" every 60 minutes, or an employee is allowed to clock in half hours.
Will I be able to work 30 and a half hour for example? If I'm allowed to, D.
If I have to work multiple of 60 minutes, B.