1Oblicz 270% liczby 2,5
2Znajdż liczbę o 75% większą od 28
3Olicz ile procent liczby 1800 stanowi liczba 81
zad.1
2,5-100%
x- 270%
100x=675/100
x=6,75
zad.2
28-100%
x-75%
100x=2100/100
x=21
21+28=49
zad.3
1800-100%
81-x
1800x-8100/1800
x=4,5%
1. 2,7*2,5=6,75
2. 0,75*28=21 21+28=49
3. 81/1800*100%=4.5%
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zad.1
2,5-100%
x- 270%
100x=675/100
x=6,75
zad.2
28-100%
x-75%
100x=2100/100
x=21
21+28=49
zad.3
1800-100%
81-x
1800x-8100/1800
x=4,5%
1. 2,7*2,5=6,75
2. 0,75*28=21 21+28=49
3. 81/1800*100%=4.5%