Question

ajutor va rog dau coroana​

Answer 1

Salut! Ai in poza rezolvarea.

Answer 2

Răspuns:

40x/100⁽²⁰=2x/5 a parcurs in prima zi

⁵⁾x-2x/5=3x/5 rest

3x/5·5/8=15x/40⁽⁵=3x/8 a parcurs a2a zi

⁸⁾2x/5+⁵⁾3x/8+⁴⁰⁾72=⁴⁰⁾x

16x+15x+2880=40x

2880=40x-31x

9x=2880

x=2880:9

x=320 km lungimea drumului

verificare:

2·320:5=128 km parcurge in prima zi

3·320:5=192 km rest

192·5/8=120 km parcurge a2a zi

128+120+72=320 km