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20
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Un tren parcurge 200 km in 3 ore. Câti km va parcurge in 5 ore ? (Se presupune ca trenul se deplasează cu aceeasi vitezã).
120 km
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20
×
Se da proportia: 3/a = b/9, sa se afle a•b/a•b+3
9/10
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15
×
Dacã a este egal cu o cincime din b, sã se afle raportul a/b;
1/5
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monster
Reset all scores!
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magnet
Take 20 points!
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rocket
Go to first place!
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baam
Lose 10 points!
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15
×
Rapoartele 2/5 si 8/20 formeaza o proportie?
Da
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20
×
Stiind ca x/y = 2/3 sa se afle 2x/2x+5y
4/19
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15
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Dacã 6 x=5 y, aflati y/x
6/5
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15
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Daca x/5 = 12/3, atunci x=...
20
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20
×
Daca x si y sunt direct proporționale cu 2 si 5, sa se afle 3x+y/2y
11/10
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seesaw
Swap points!
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seesaw
Swap points!
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rocket
Go to first place!
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lifesaver
Give 20 points!
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