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1,5 * 540 = 810
810 / 1,8 = 450
Odp. D
2.
10dm->100cm
5km->5000m->500000cm
100cm : 500000cm
1cm : 5000cm
Odp. B
To zadanie nalezy obliczyć na proporcje:
1,8/540=1,5/x
1.8x=1.5 * 540
x= 450
2.
1:5000