<human>:  Maria wants to buy a brand new bike. The retail price at the bike shop stands at $600. She saved $120 toward the purchase. As this was not enough, she asked her mother to give her the remaining amount. Her mother offered her $250 and told her that she needs to earn the rest working during the holidays. How much money must Maria earn to be able to buy the bike she wants?
<bot>: How much money does Maria have? ** Maria has $120 and received $250 from her mother. So she has 120 + 250 = $<<120+250=370>>370.
How much money does Maria need? ** As the price of the bike stands at $600, Maria needs 600 – 370 = $<<600-370=230>>230 more to buy the bike.
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