Question

on a foraging trip, Grover dug up 7 bones and caught 4 fish in 49 minutes. Harold, working at the same speed as Grover, dug up 5 bones and caught 2 fish in 29 minutes. Under these conditions, how long does it take to dig up a bone, and how long does it take to catch a fish?

Answer 1

First of all give a pro numeral value for fish and for bones. In this case x and y.
The establish the two equations.
7x+4y=49 (1)
5x+2y=29 (2)

Alter the second equation by multiplying it by two

10x+4y=58 (3)

Now we can minus eqn (3) from (1)

-3x=-9
x=3

Sub Back In:

7(3)+4y=49
21+4y=49
4y=28
y=7

Answer 2

Had to edit a few times. I'm finished now. @NY,NY

Answer 3

okay, so how long does it take for each? because i can't say "it took 3 to dig up bones and 7 to catch a fish." what's the unit? hours?

Answer 4

it can't be hours.

Answer 5

@Henry.Lister what's the unit?

Answer 6

but...
omg yur right
thank yu
=)

Answer 7

lol yes thanks Henry :D