Question

A jigsaw puzzle is made of $60$ parallelogram shaped parts each having base $10$ units and height $5$ units. If the total area of the puzzle after joining all the parts is $500$ square units, find the number of parts used.

• A. $100$
• B. $110$
• C. $50$
• D. $10$

Answer 1

The correct option is D $10$

Given: Base $=10$ units, Height $=5$ units, Total number of parts $=60$, Total area $=500$ square units

Area of one part $=$ Area of parallelogram

Area of parallelogram $=$ Base $\times$ Height

$=10\times 5=50$ square units

Total Area $=$ Number of parts $\times$ Area of one part

Number of parts $=$ Total area divided by area of one part

$=\frac{500}{50}=10$ parts