You already owed your friend $6. This morning you borrowed $4 more and this afternoon you paid back $8. How much money do you owe your friend?

$2

Step-by-step explanation:

If you already owe your friend, you have $6 to give back

$6

You borrowed $4 more

$6+$4

You gave back $8

$6+$4-$8

$6+$4-$8

$10-$8

$2

c.)

step-by-step explanation:

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.