There are 21 wheels at the bike shop. The wheels will be used to build tricycles and bicycles. Some day, the owner would like to build unicycles , too. There will behalf as many tricycles as bicycles. How many of each type of bike will be built?

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.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)