Answer: He earned 0.831% interest in total.
Step-by-step explanation:
Given: Shawn earned $2.77 per day for three days as interest on his $1,000.00 investment.
Interest per day = $2.77
Interest in 3 days = 3 x ($2.77)
= $8.31
Invested amount= $1000
Required percentage of earnings = ![\dfrac{\text{Interest earned in 3 days}}{\text{Initial investment}}\times100](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Ctext%7BInterest%20earned%20in%203%20days%7D%7D%7B%5Ctext%7BInitial%20investment%7D%7D%5Ctimes100)
![=\dfrac{8.31}{1000}\times100=0.831\%](https://tex.z-dn.net/?f=%3D%5Cdfrac%7B8.31%7D%7B1000%7D%5Ctimes100%3D0.831%5C%25)
Hence, he earned 0.831% interest in total.
So you need to divide 1000 by 125 which is 8. Which then you times by two to equal the two kilograms. So he needs to fill the cup up 16 times.