Question

3. Donna earns twice as much money per month as Omar. Omar earns $ 200 more than Alex. Together, the three workers earn $ 3,320 per month. How much does Omar earn per month?

Answer 1

Let the money earned by Donna be Rs x

                                     by Omar be Rs y

                                     by Alex be Rs z

Acc to question

x = 2y                 y = z + 200

x = 2y                 y - 200 = z

Now,

x + y + z = 3320

2y + y + y - 200 = 3320

4y - 200 = 3320

4y = 3520

y = 880

Omar earns Rs880 per month