Question

Un biciclist a parcurs un drum astfel: in prima zi 1/4 din drum, a doua zi 5/6 din rest,ramanandu-i de parcurs 28km. Cati km are intregul drum

Answer 1

I zi:d/4

a II-a zi: ((3d/4)*5)/6

d = d/4 + ((3d/4)*5)/6 + 28

4*d = d + 15*d/6 + 112

24*d = 6*d + 15*d + 672

( 24 - 21 ) *d = 672

d = 672/3 = 224