Question

intr-o excursie mihaela cheltuie banii astfel : in prima zi jumatate din suma; a doua zi jumatate din suma ramasa ; si tot asa pana ce s-a intors acasa cu 5lei . Daca Mihaela a cheltuit in total 155 de lei aflati cata zile a durat excursia

Answer 1

155-5=150
150:2=75. 1
75 :2 =32,5. 2
32,5:2= 16,25. 3
16,25:2=8,125. 4,
8,125:2=4,65 5
4,650:2=2,325. 6
2,325:2=1,165. 7
si tot asa