Question

During normal days, there are 1400 buses travelling in the city. On sunday, about 1562 buses are found. Compared with a normal day, how many more passengers travel by bus on Sunday if each bus has 40 passengers.

• A. 6400
• B. 4200
• C. 5300
• D. 4100

Answer 1

The correct option is A 6400

Number of buses on normal days = 1400
Number of buses on Sunday = 1562

Extra buses on Sunday
= Number of buses on Sunday - Number of buses on normal days
= 1560 - 1400

1560
- 1400
_______
160
_______
Therefore, number of extra buses on Sunday = 160

Number of passengers in each buses = 40
Number of passengers in 160 extra buses
= 160 x 40

In order to multiply by a number ending in zeros, we first need to multiply the number as if it didn't have zeros, and then we just write all of the zeros the number had, on the right of the final answer.
(i) Multiplying the non-zero terms, we get,
$2$
16
x 04
_______
64
_______
(ii) 160 has one zero and 40 has one zero. So, we write two zers to the right of 64.
i.e, 160 x 40 = 6400

Therefore, 6400 more passengers travel by bus on Sunday.