Convert binary into octal number system
(1011010)
(1010111)​

the number 1010111 in binary is equivalent to 127 in octal.

the number 1011010 in binary is equivalent to 132 in octal.

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.