Which number is a factor of 15, but not a multiple of 3

We know that factors are numbers we can multiply together to get another number.

So 1 and 15 are factors of 15.

Also,

So 3 and 5 are factors of 15.

We have got 1, 3, 5, 15 all are factors of 15.

Multiple is a number that can be divided by another number without a remainder.

So we know that 3 is a multiple of 3, as and also 15 is a multiple of 3, as .

But 1 and 5 are not multiples of 3.

We have got the required answer.

1 and 5 are factors of 15 but not multiples of 3.

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.