Question

Don and Dan went fishing. Don caught 6 times more mass of fish than his brother. Together they caught 4.2 kg of fish. What mass of fish did each of them catch? Please help! :))

Answer 1

Don caught 3.6 kg and Dan caught 0.6 kg.

Explanation:

Set up a system of equations:

Don's fish is the variable a and Dan's fish is the variable b.

a + b = 4.2 (1)

a=6b (2)

We can substitute a in the first equation using the second equation, so:

6b + b = 4.2

7b = 4.2

b = 0.6 kg

Dan caught 0.6 kg. Then, we can use equation 2 to find how much Don caught.

a = 6 x 0.6

a = 3.6

Don caught 3.6 kg.