Answer:
84 is 7 x n.
n = 84 ÷ 7
n = 12
Step-by-step explanation:
You can solve the problem by using <em>algebraic expressions</em> in looking for the value of n.
Let n be<em> the no. of families in City B that have a dog.</em>
<em>City A is 7 times as many families with a dog than City B</em>. You can express this as: City A = 7 x n
Since you know that City A has 84 families owning a dog. Then you can express this as: 84 is 7 x n or 84 = 7 x n.
Let's get the value of n.
84 = 7 x n
n = or n = 84 ÷ 7
n = 12
There are 12 families in City B that have a dog.