450 sonini 20% ga oshiring.

540
560
520
510

📝 Detailed explanation

Dastlab 450 sonining 20% ini hisoblaymiz: 450 × 0,20 = 90. So'ngra uni dastlabki songa qo'shamiz: 450 + 90 = 540.

7 / 10 (70%)

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