Tổng của hai số là 1480. biết số bé bằng 25% số lớn. tìm số lớn. trả lời: số lớn là

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Đổi 25%= \(\frac{1}{4}\)

Coi số bé là 1 phần thì số lớn là 4 phần như thế

Số lớn là

1480 : ( 1 + 4 ) x 4 = 1184

Đ/S : 1184 

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so be bang 25/100 so lon vay ti so cua so be va so lon la 25/100.=1/4

ta co so do:tu ve lay

theo so do, tong so phan bang nhau la:

1+4=5(phan)

so lon la:

1480:5x4=1184

D/s:1184

1184 dung 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