Question

Dau 10 puncte,coroana,etc

Answer 1

a,b,c,d,e=nr. de pe tricourile copiilor
a+b+c+d+e=155
b=a+1
c=a+2
d=a+3
e=a+4
________
a,b,c,d,e=?
________
a+a+1+a+2+a+3+a+4=155
5a=155 - 10
5a=145
a=145:5
a=29
b=29+1
b=30
c=29+2
c=31
d=29+3
d=32
e=29+4
e=33

Answer 2

d_
i_+1
r_+2
m_+3 /155
a_+4

155-10=145
145:5=29

Dinu=29
Ioana 29+1=30
Irina 29+2=31
Matei 29+3=32
Adriana 29+4=33

v.29+30+31+32+33=155