Question

O persoana cheltuieste S - suma de bani in 3 zile astfel : 1-a zi cheltuieste 30 % din suma , a 2-a zi cheltuieste 40% din suma si a 3-a zo 1\4 din suma , aflati cat a chetuit in prima zi

Answer 1

30/100*S=3/10*S cheltuieste in prima zi
40/100*S=4/10*S cheltuieste in a doua zi
1/4*S in a treia zi. 

Answer 2

1 zi : 30 /100 x S=3/10 x S

2 zi : 40/100 x S =4/10 xS

3 zi : 1/4 x S