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They have a third of everything in the kit store. Pepin has 1,200 crowns saved and wants to buy a space robot kit, which costs 1,950 crowns before the discount. How many crowns does he still have to save?

Correct answer:

x =  100

Step-by-step explanation:

1200 + x = 1950 - 1950/3

3x = 300

x = 300/3 = 100

x = 100

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