\( \frac{6}{\frac{2}{5}}-\frac{\frac{6}{5}}{5} \) Yukanda verilen islemin sonucu kaçır? \( \begin{array}{llll}\text { A) } \frac{72}{5} & \text { B) } \frac{-72}{5} & \text { C) } \frac{5}{72} & \text { D) } \frac{-5}{72}\end{array} \)

When we round 363104 to three significat figures, we get:

13. A seller uses 930 gm in place of one kg to sell his goods. Find his actual \% profit or loss, when he sells his article on \( 3 \% \) gain on cost price : \( \begin{array}{ll}\text { (a) } 8 \frac{70}{93} \% & \text { (b) } 9 \frac{10}{93} \% \\ \text { (c) } 10 \frac{70}{93} \% & \text { (d) None of these }\end{array} \)

A seller uses 930 gm in place of one kg to sell his goods. Find his actual \% profit or loss, when he sells his article on \( 3 \% \) gain on cost price : \( \begin{array}{ll}\text { (a) } 8 \frac{70}{93} \% & \text { (b) } 9 \frac{10}{93} \% \\ \text { (c) } 10 \frac{70}{93} \% & \text { (d) None of these }\end{array} \)

81. Pipe A can fill an empty tank in 45 minutes and pipe B can empty it in one hour. If pipe A is [ ] opened at 10:00 AM and pipe B at 10:15 AM, by what time does the tank get filled? \( \begin{array}{lllll}\text { (a) } 12: 00 \mathrm{PM} & \text { (b) } 12: 15 \mathrm{PM} & \text { (c) } 12: 30 \mathrm{PM} & \text { (d) } 1: 00 \mathrm{PM} & \text { (e) } 1: 30 \mathrm{PM}\end{array} \)

12 Men or 15 women can do a piece of work in 21 days. Find the number of days required to complete the same work by 6 men and 10 women.