Gayle bought a shirt that was originally marked as $18. She had a coupon to receive 15% off the price. Gayle had to pay 7.5% sales tax on her shirt. What price did Gayle pay for the shirt?

$16.45

Step-by-step explanation:

18 decrease 15% =

18 × (1 - 15%) = 18 × (1 - 0.15) = 15.3

15.3 increase 7.5% =

15.3 × (1 + 7.5%) = 15.3 × (1 + 0.075) = 16.4475

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.