Question

Kiarra has 7 more coins than Eric. Eric has twice as many coins as Hector. Altogether they have 127 coins.

Question:
a) Define variables.
b) Write an equation.
c) Plug in variables and solve.
d) Find out how many coins each person has.

Answer 1

Hey !

Let us take the number of coins hector has as ' x '

Then, Eric would have ' 2x ' as he has twice as many as hector

Kiarra would have 7 + 2x , as she has 7 more than Eric

Together they have 127

Now, let us add them all up

x + 2x + 2x + 7 = 127

combining like terms

5x + 7 = 127

Subtracting 7 on both sides

5x = 120

dividing by 5 on both sides

x = 24

Hector has 24 coins

Eric has 48 coins

Kiarra has 55 coins

Hope my answer helps!