Question

Oblicz 10,5%wartości wyrażenia:

28 4/5 :13 5/7+6 3/5:2/3
______________________
1 11/16:2 1 /4

Answer 1

28 4/5 : 13 5/7 + 6 3/5 : 2/3
__________________________ =
1 11/16 : 2 1/4

144/5 :96/7 + 33/5 x 2/3
______________________ =
27/16 : 9/4

144/5 x 7/96 + 99/10
___________________ =
27/16 x 4/9

21/10 + 99/10 120/10
_____________ = ______ = 120/10 x 4/3 = 80/5 = 16
3/4 3/4

16 - 100%
x - 10,5%
10,5% x 16
x = _________ = 168 : 100 = 1,68
100%