Jika A:B:C=3:5:1.Jika B–A=10,maka A+B–C= tolonh bantu ya

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Matematika
VI
Perbandingan

Please, let me answer your question :)
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Jawaban :

A : B : C
3 : 5 : 1

Diketahui : B - A = 10

Ditanya :

A+B-C

( 3 + 5 - 1 ) / ( 5 - 3 ) × 10
7/2 × 10
7 × 5 = 35

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A = A/A-B ×10 = 3/5-3 ×10 = 3/2×10 = 3×5 = 15
B = B/B-A ×10 = 5/5-3 ×10 = 5/2×10 = 5×5 = 25
C = C/B-A = 1/5-3 ×10 = 1/2 ×10 1×5 = 5

A+B-C =15+25-5=35