I think that was just a typo in Omi's first line of answer, because it was subsequently answered/calculated correctly.

Austin's rate    1 lawn/3 hours    

Jacob's rate     1 lawn/4 hours

Combined

(1 lawn )/ (1 lawn/3hours + 1 lawn/4hours)  =   1 lawn/ (4 lawns/12 hours + 3 lawns/12 hours)

= (1 lawn)/(7lawns/12 hours) =

1 x  12/7   hours                   'lawn' cancels out

= 12/7 hours = 1 5/7 hours =  1 hour  42.9 minutes

TOOOOOO many solutions to this problem without more infrmation......assuming it is a Right Triangle, you can just pick ONE side and then compute the other .....infinitely

Example: Hypotenuse = 14   let's pick side 'a'   as   3.6  then side 'b'

would be    sqrt(14^2 -3.6^2)  = 13.52

or if you pick side 'a' as 8.1  then 'b' would be

sqrt(14^2 -8.1^2) =11.41

etc   etc   etc

Well there are 36 possible rolls

there are three  possible primes on each die    2, 3 and  5

you can roll a

2 & 2

2 & 3

2 & 5

3 & 2

3 & 3

3 & 5

5 & 2

5 & 3

5 & 5

Those are the only 9 rolls that have TWO primes      9 out of 36 rolls     9/36   or   1 /4   

(x-5)^2     expands to   x^2 - 5x - 5x + 25  =  x^2 -10x +25      Do you need more info?

Hey Melody....Happy New Year Down Under!!

I used to live in Alaska....now I am in Colorado, but we still have a Polar Bear Plunge every Jan 1st for the people who want to 'cleanse' to start off the New Year !    Ya get a free t-shirt.....who could say 'NO!'     LOL

7 am for us here...gearing up for a party!   Anyone up for a swim?

You can just divide through by ' 7 ' to get

2:1:3

I believe  YOU have it correct vest4R....do you need any more help?

CPhil answered the question as    672    if Bob and Yogi are NOT together.

THEN, as a bonus,  he showed the answer IF Bob and Yogi could play on the same team

Thanx to BOTH of you !