Hi,

I am confused. Why does the min and max speed has to be 2 and 3? I know it has to be an integer.

Your average speed would be closer to the speed you traveled at for the larger duration of time.

"Once a value has been chosen for a³ , the value of b will be equal to whichever factors on the lefthand side are not included in the value of a³".

Then how there are 12 different possible values of b. How does calculating factors for a tells you possible values of b?

Thanks Mich

Jim, I know its an easy concept. Please could you explain it in more detail?

Hi Brent

Whilst doing the question, I got stuck at this question on below step...I still can't fully grasp the concept. Please could you explain in more detail or suggest an alternative approach?


We are told that 4+6d is 1/5 greater than 4+4d
In other words 4+6d = (4+4d) + 1/5(4+4d)

Number Properties

The number 75 can be written as the sum of the squares of 3 different positive integers. What is the sum of these 3 integers?

(A) 17 (B) 16 (C) 15 (C) 14 (E) 13

Problem Solving

If Bob produces 36 or fewer items in a week, he is paid x dollars per item. If Bob produces more than 36 items in a week, he is paid x dollars per item for the first 36 items and 3/2 times that amount for each additional item. How many items did Bob produce last week? (1) Last week Bob was paid a to...

Data Sufficiency

If b is positive, is ab positive?
(1) a^2*b > 0
(2) a^2 + b = 13

Remainder

When the positive integer n is divided by 25, the remainder is 13. What is the value of n ?

(1) n < 100
(2) When n is divided by 20, the remainder is 3.