Ch.2: 289. Find the greatest common factor (GCF) of these numbers. \[ \text { a. } 120 \text { and } 140 \]

When we round \( \frac{17}{3} \) to 2 s.f, we get:

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

PARTIE B 1) Effectuer les opérations suivantes et donner le résultat sous la forme de fraction irréductible : \( \mathrm{A}=\left(\frac{1}{2}-\frac{11}{24}\right) \times\left(2-\frac{4}{3}\right) \) et \( B=\left(2-\frac{3-\frac{1}{3}}{3+\frac{1}{3}}\right):\left(1+\frac{1+\frac{3}{4}}{1-\frac{3}{4}}\right) \)

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

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