equivalent fractions are fractions which have the same value.
equivalent fractions all have the same simplified form
we can write equivalent fractions by multiplying both numerator and denominator by the same number. We can also write equivalent fractions by dividing both numerator and denominator by the same number
so 5/10
we can get the equivalent fractions by multiplying by a common number
when we multiply by 2
when we multiply by 3
when we multiply by 4
the three equivalent fractions are
10/20 , 15/30, 20/40
What this question means is that there is a certain number 1x2 that is divisible by 11.
we can simply see what kind of candidates there are. Let's start with 10*11=110.
now, how much is 11*11? it's 121, so not.
12*11? it's 132, and it fits into the question, and the missing number is 3!
so they each paid 12 dollars and gave 132 dollars to the speaker.