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 : \( \begin{array}{ll}\text { (a) } 8 \frac{70}{93} \% & \text { (b) } 9 \frac{10}{93} \% \\ \text { (c) } 10 \frac{70}{93} \% & \text { (d) None of these }\end{array} \)

23. Raúl gana \( \$ 1800 \) pesos a la semana, pero paga \( \frac{2}{5} \) de su sueldo para su viaje de graduo- ción; ¿cuánto dinero representa la fracción?

11) \( 120 \% \) of 18 is what? \( \begin{array}{ll}\text { 13) What is } 270 \% \text { of } 60 ? & \text { 12) } 25 \text { is what percent of } 37 ? \\ \text { 15) } 37 \% \text { of } 41 \text { is what? } & \text { 16) } 9 \text { is what percent of } 84 \text { ? } \\ \text { 17) What percent of } 88.6 \text { is } 70 ? & \text { 18) What percent of } 137 \text { is } 86 ?\end{array} \)

2. \( \begin{array}{r}5.76 \\ +\quad 2.34 \\ \hline 8.16\end{array} \)

If \( 3^2 \) is calculated, what is the result?

13) What is \( 270 \% \) of 60 ? \( \begin{array}{ll}\text { 15) } 87 \% \text { of } 41 \text { is what? } & \text { 14) } 73 \% \text { of what is } 156.4 \text { ? } \\ \text { 17) What percent of } 88.6 \text { is } 70 ? & \text { 16) } 9 \text { is what percent of } 84 ?\end{array} \)