Question

pls pls cu tot cu explicatii

Answer 1

6.
a)40/100 • 600 = 240
5/100 • 240 = 12
b)32/100 • 50 = 16
75/100 • 16 = (75•4)/25 = 12
c)48/100 • 2000 = 960
125/1000 • 960 = 120
d)70/100 • 68 întregi 571428/999999 =
7/10 • 68571360/999999 = 48
25/100 • 48 = 12

9.
a)20/100 • 160 = 32
160+32=192
b)30/100 • 240 = 72
240-72=168

10.
a)x/10 = 40 =>x=400
b)x/4 = 900 =>x=3600
c)4x/5 = 1040 =>x=1300

12.
a)x=50% din y
b)50 ___ 100%
400 ____ x
x=40000/50=800%
c)1000 ___ 100%
80 ______ x
x=8000/1000=8%
d)x=25% din y (un sfert)
e)25 ____ 100%
7 _______ x
x=700/25=28%
f)45 ____ 100%
12 ______ x
x=1200/45=26,(6)%