Bunuel wrote:

Official Solution:

If a 5-year construction project is structured to double the investment every succeeding year, approximately what percentage of the total cost was invested in the first year?

A. 12.5%

B. 10%

C. 8.25%

D. 5%

E. 3%

Let's say we invested $10 the first year. The second year it will be $20 more, third - $40 more, fourth - $80 more, and fifth - $160 more. Now, add them: 10+20+40+80+160 = 310. So, the original investment was \(\frac{10}{310}\) or \(\frac{1}{31}\) or about 3%.

Answer: E

hi..!

this question could be interpreted as follows also..?

say first year we invested 10$

so 2nd year : 20 $

Now 3rd year we invest double the invested amount : so it could be 2*(10+20) = 60 $.i assumed it this way, solved it and then saw that there were no matching choices. So had to do it again in the above mentioned manner..