1800 people took part in a survey. 34 were aged 25-59 15 were over 60 The remainder were under 25 How many were under 25?

1751

Step-by-step explanation:

Given, Total people took part in the survey = 1800

Number of people aged  25 - 59 = 34

Number of people aged over 60 = 15

As per the scenario in the question :

Total people = (Number of people aged under 25)+ (Number of people aged  25 - 59 ) + (Number of people aged over 60)

i.e. Number of people aged under 25 = (Total people) - ((Number of people aged  25 - 59 ) + (Number of people aged over 60))

i.e. Number of people aged under 25 = 1800-(34+15)

= 1800-49

= 1751

Hence, Number of people aged under 25= 1751