Oblicz a) 75% kwoty 160 zł ..... b)40% masy 500t ...

75%*160= 3/4*160= 120zł 40%*500=2/5*500=200t

a) 75% z 160 zł 160 zł * [latex] frac{75}{100} [/latex] = 160 * [latex] frac{3}{4} [/latex] = [latex] frac{160 * 3}{4} [/latex] =  [latex] frac{480}{4} [/latex] = 120 zł b) 40% z 500t 500t * [latex] frac{40}{100} [/latex] = 500 * [latex] frac{2}{5} [/latex] = [latex] frac{500 * 2}{5} [/latex] = [latex] frac{1000}{5} [/latex] = 200t