Two options are available for painting your house: (1) oil-based painting, which costs $4,800 and (2) water-based painting, whic
h costs $3,000. The estimated lives of the painting projects are 10 years and 5 years respectively. For either option, no salvage value is expected at the end of the respective service lives. Assume that you will keep and maintain the house for 10 years. At an interest rate of 10%, which of the following statements is correct?
a) On an annual basis, oil-based painting will cost about $850
b) On an annual basis, water-based painting is about $22 cheaper than oil-based painting
c) On an annual basis, both options cost about the same
d) On an annual basis, water-based painting will cost about $820
a) On an annual basis, oil-based painting will cost about $850
b) On an annual basis, water-based painting is about $22 cheaper than oil-based painting
c) On an annual basis, both options cost about the same
d) On an annual basis, water-based painting will cost about $820
1 answer:
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Answer:
90%
Explanation:
Let x be the total number of matches,
Given,
80% of games were finished,
So, the number of finished games = 80% of x = 0.8x
∴ Remained games= x - 0.8x = 0.2x
Now, 40% of 80% of games were won,
So, the winning games in 0.8x matches = 40% of 0.8x
= 0.4 × 0.8x
= 0.32x
In order to finish games with the same number of wins as losses,
Winning percentage in all games must be 50%,
Thus, the total winning games = 50% of x = 0.5x
Let y be the winning percentage in 0.2x games,
So, the total winning games in 0.2x games =
∵ Number of winning matches in 80% games + number of winning matches in 20% = total winning matches
⇒
Hence, the percent of winning the in the remaining games must be 90%.