Question

3.4% de 639.2

.45% de 9.32

86% de 7351

Answer 1

Regla de tres
1)))
100%___639.2
3.4%____x

X = 3.4%×639.2/100%
X = 21.73
2)))
100%____9.32
45%____x
X = 45%×9.32/100%
X = 4.19
3)))
100%___7351
86%___x

X = 86%×7351/100%
X = 6321.9