Three out of every 10 students in mr. chan's class brings their lunch to school. write this ratio as a percent

The ratio will be 3:10 you have turn 10 to 100 so you multiply it by 10. And multiply 10 by 3 will be 30/100

the answer is 30%

you divide the cost ($15) by the quantity (6) to get your questions answer. the yo-yo costs $2.50. hope this : )!

step-by-step explanation:

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.