3. Shawna and Owen went out to dinner. Their total bill wo \( \$ 86 \). If they added a \( 22 \% \) tip and split the bill evenly, hov much did each person pay for the meal?

number of girls is \( 9: 7 \). Find the number of boys if the total number of students is 3200 . 19. The sides of a triangle are in the ratio of \( 2: 3: 4 \). If the perimeter is 72 cm , find its sides. 20. In a factory the ratio of number of defective bolts produced to the number of good bulbs is \( 1: 10 \). In one hour the factory produced 330 bolts. Find the number of defective bulbs produced by the

\( \vdots 05 \) Barbara effettua una spesa di 8 euro e 50 centesimi e paga con una banconota da 20 euro. Il negoziante ha esaurito le banconote da 10 euro e da 5 euro e dà il resto in monete da 2 euro e da 50 centesimi. In tutto dà come resto 11 monete. Quante monete da 2 euro e quante da 50 centesimi sono state date dal negoziante come resto?

\( 66 \frac{2}{3} \% \) of 60 kg

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

2 Find which of the following are proportion a) \( 8,16,6,12 \)