That's great Eric, thanks!!! one fast question are this 3 different lessons or just one (the same) in 3 different times. coz when i saw this i registered for the three lessons, and now that i come to thing about it, if they are the same, I wouldn't want to take the slot of someone else (since spaces...

for question 6. i did the following: 50mph at 5 hours = 250 miles driven 30 miles per gallon at 50mph means: 250/30 = approx 8 gallons 8 out of 12 gallons comes out to 2/3. why is 2/3 not right coz it's an approximation. it's a little over 2/3 not exactly 2/3 25/36 is a little over 2/3 hence closer...

m/13=q and 2 remainder
m/17=x and 2 remainder

so m-2 is a multiple of 13 and 17
m-2/13=q with no remainder but we don't need it anyway.

so q must be a multiple of 17

hence, A=0

straightforward C, imo.

They invite some people => not empty booth => more people comeing => resulting in more sales.

1) not a division or subtraction so it's sufficient.

we can swap positions with + and *

2) it can be multiplication or division so //insuff

if it's * it's ok but if it's division we are scr**d

Hence, A.

IMO C.

A - wordy and being?

B - superiority to something I guess not over something (superior to you not superior over you) and wrong use of past perfect?

C - Sounds OK. Correct?

D and E out of the question.

It's E. 1. We have only + and * so we can safely say it doesn't matter if we swap places or no. 2. Is obvious 3. As 1 we can safely say we can do this since with + and with * we can do this kinds of swapping. 1+2+3=2+3+1 1*2*3=2*3*1 If we had - or / somewhere on the other hand.. but we don't. 1st I ...

We do get more info for both.

x>y and they are both the same sign

so

x-y=1/2

x and y can't both be negative so they are both positive.
and we can't have +x -y or -x +y anymore coz they must be the same sign.

Hence, C