-18917
In short, the answer is 33 numbers.
I used a 100s table and eliminated all multiples of 2 and 3 and then counted the remaining numbers.
I'm sure there are other faster ways to do this but this was the first way that came to mind.
Hope it helps!
In short, the answer is 143cm2.
This is how I did it:
First, we must find the surface area of every face.
10x5 = 50
6x8 = 48 (we can do this because both triangles are the exact same)
5x8 = 40
6x5 = 30
Now we add all this up and get 143cm2.
13 = 133, 233, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 433.
The second runner was 40m ahead of the 3rd runner because the first runner finished 40m in front of the 2nd runner and 80m in front of the 3rd. To find the distance in between the 2nd runner and 3rd runner we do the following, 80m - 40m = 40m
1 soap bar = 3/4 of a soap bar + a 3/4 pound weight. The 3/4 pound weight replaces the 1/4 missing of the soap bar. Therefore, in order to find the total weight of the soap bar we have to multiply 3/4 x 4 = 12/4 which we then simplify into 3/1. The total weight of one soap bar is 3 pounds.
