These two triangles are similar .Find side lengths a and b .The two figures are not drawn to scale.

The 10 side is proportional to the 4 side

Or left triangle is 2.5 times bigger than right triangle.

(15 / a) = 2.5

a = 15 / 2.5

a = 6

(b/9) = 2.5

b = 9 * 2.5

b = 22.5

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.