At the airport 42% of the people are there for international travel 51% of the people are there for domestic travel and the rest are airport staff of there are 7500 people at the airport how many staff members are there

there were 525 staff members at the airport.

525

Step-by-step explanation:

Given

42% are there for international travel and

51% are there for domestic travel

The rest are airport staff.

Add the % of those who are there for international travel and domestic travel. Then subtract the result from 100% to get the % of those who are airport staff.

That's

42% + 51% = 93%

% of airport staff = 100% - 93% = 7%

If there are 7500 people, airport staff will be % of airport staff divided by 100% and then the result multiplied by the number of people

That's

7% / 100% x 7500

0.07 x 7500

525

There are 525 staff members