The rectangle graphed has a length of 5 and a width of 4 how does the perimeter change when the length is doubled

The perimeter before is 5+4+5+4=18.

After doubling the length, we do 10+4+10+4=28.

The difference is 10, so the perimeter increases by 10.

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.