Question

There are $8$ red cars. $7$ more red cars are added. Whereas, there are $10$ blue cars and $5$ more blue cars are added. Is the number of red cars the same as the number of blue cars? How many cars of each type are there?

• A. Number of red and blue cars are the same.; $14$
• B. Number of red and blue cars are different.; Blue: $14$, Red: $15$
• C. Number of red and blue cars are different.; Blue: $15$, Red: $14$
• D. Number of red and blue cars are the same.; $15$

Answer 1

The correct option is D Number of red and blue cars are the same.; $15$

Total number of red cars: $8+7$
To find $8+7$, we break down $7$ into $2$ and $5$, then add $8$ and $2$ to make $10$, and finally add $10$ with $5$ to find the answer.



Thus, there are $15$ red cars.

Total number of blue cars $=10+5=15$

Therefore, the number of both the cars is the same and there are $15$ cars of each type.

Hence, Option C is correct.