Răspuns :
prima zi : 20/100*400 =80
rest: 400-80=320
a doua zi:1/4*320=80
rest : 320-80=240(parcursi in a treia zi)
d) p/100*400=320
p/100=320/400
p/100=4*5
p=80%
e) p/100*80=240
p/100=240/80
p/100=3
p=300%
rest: 400-80=320
a doua zi:1/4*320=80
rest : 320-80=240(parcursi in a treia zi)
d) p/100*400=320
p/100=320/400
p/100=4*5
p=80%
e) p/100*80=240
p/100=240/80
p/100=3
p=300%
a)20% din 400= 20/100 *400= 1/5 *400= 80km -in prima zi
b)400-80=320 km-restul
1/4 din 320= 80km -in a doua zi
c)320-80= 240 km -in a treia zi
d)(80+240)=320 km -a parcurs in a2a si a3a zi
p/100 din 400= 320
p/100 *400=320
p*4=320
p=320/4=80%
e)p% din 80=240
p/100*80=240
p/100=240/80
p=100*240/80
p=100*3
p=300%
b)400-80=320 km-restul
1/4 din 320= 80km -in a doua zi
c)320-80= 240 km -in a treia zi
d)(80+240)=320 km -a parcurs in a2a si a3a zi
p/100 din 400= 320
p/100 *400=320
p*4=320
p=320/4=80%
e)p% din 80=240
p/100*80=240
p/100=240/80
p=100*240/80
p=100*3
p=300%