1. Look for a pattern in the first three equations. Then, fill in the missing numbers in the rest of the series of equations.
1= 1.22
1 + 2 = 2
nico
1 + 2 + 3 = 3.42
1 + 2 + 3 + ? = ?-?
1 + 2 + 3 + ? +?=?
?.??

1=1 times 2/2 1 + 2=2 times 3/2 1 +2+3=3 times 4/2 1+2+3+4=4 times 5/2 1+2+3+4+5=5 times 6/2

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.

12*c

step-by-step explanation: