Show your work please . NO LINKS.​

Unable to load answer {prompt.505-banneduser-5/9/21/1.52.981135.48}

There are 3 tricycles and 9 bicycles.

Step-by-step explanation:

Since we have given that

Number of wheels at the bike shop = 21

Number of wheels bicycle has = 2

Number of wheels tricycle has = 3

Let the number of tricycle be 'x'.

Let the number of bicycle be '2x'.

According to question, we get that

So, Number of bicycle would be

Hence, there are 3 tricycles and 9 bicycles.