Question

dau coooooooroooaaaanaa

Answer 1

x/5 - mere

x-x/5=4x/5 - rest

4x/5·1/2=2x/5 - piersici

x-x/5-2x/5=2x/5 - rest

2x/5·1/4=x/10- prune

x/5+2x/5+x/10+2·15=x

2x+4x+x+300=10x

300=10x-7x

x=300:3

x=100 lei a avut Roxana

100:5=20 lei au costat merele

100-20=80 lei rest

80:2=40 lei au costat piersicile

100-(20+40)=40 rest

40:4=10 lei au costat prunele

2·15=30 lei au costat caisele

proba:20+40+10+30=100 lei suma initiala