Question

A train has 40 compartments, and each compartment has 20 seats. If the Royal rail service has a total of 39 trains, calculate the total number of seats in all the trains.

• A. 31,200 seats
• B. 32,200 seats
• C. 31,300 seats
• D. 32,300 seats

Answer 1

The correct option is A 31,200 seats

Total number of compartments in each train $=40$.

Total number of seats in each compartment $=20$.

∴ The total number of seats in each train is:
= $40\times 20$.

Calculating $40\times 20$ by using standard algorithm process,


So, $40\times 20=800$.

∴ The total number of seats on each train $=800$.

But, the Royal rail service has a total of $39$ trains.

So, the total number of seats on all trains $=800\times 39$.

So, calculate $800\times 39$ by using standard algorithm method.

Step 1: Multiplying $800$ by $9$, you get $7200$.


Step 2: Multiplying $800$ by $30$, you get $24,000$.


Step 3: Adding $7200$ with $24,000$, you get $31,200$ as the final answer.




∴ The total number of seats in all the trains $=31,200$.