Question

Aflati un numar stiind ca 25%din el este:a)70;b)25;c)3supra4;d)325; e)2intrgi 1supra 2;f)3intregi3supra8; va roooggg

Answer 1

a) 25X/100 = 70
X/4 = 70
X = 70×4
X = 280

b) 25X/100 = 25
X/4 = 25
X = 25×4
X = 100

c) 25X/100 = 3/4
X/4 = 3/4
X = 4×3/4
X = 3

d) 25X/100 = 325
X/4 = 325
X = 325×4
X = 1 300

e) 25X/100 = 2 intregi 1/2
X/4 = (2×2+1)/2
X/4 = 5/2
X = 4×5/2
X = 20/2
X = 10

f) 25X/100 = 3 intregi 3/8
X/4 = (3×8+3)/8
X/4 = 27/8
X = 27×4/8
X = 27/2