Find the value of 5-23 × 16-23 × 21-23 .
\(\frac{1}{1725^{23}}\)
\(\frac{1}{1680^{23}}\)
\(\frac{1}{1726^{23}}\)
\(\frac{1}{1634^{23}}\)
Pipe A can fill a tank in 17 hours, pipe B can fill the same tank in 21 hours and pipe C can fill the same tank in 19 hours. The time taken by them to fill the same tank if they operate together is:
13 \( \frac{309}{1079} \) hours
5 \( \frac{309}{1079} \) hours
6 \( \frac{309}{1079} \) hours
11 \( \frac{309}{1079} \) hours
By selling an article at \( \frac{4}{14} \) of its actual selling price, Akash incurs a loss of 30%. If he sells it at 54% of its actual selling price, then the profit percentage is: