Two years ago, a survey revealed that 2400 students in a college were able to use computers at home. This year, the number of students who are able to use computers at home has increased by 30%. How many students are now able to use computers at home?
- A2820
- B3120
- C720
- D3000
Solution & Step-by-step Explanation
The initial number of students who were able to use computers at home =2400.
The number of students increased by 30% this year.
Increase in students=30% of 2400=
100
30
×2400=720
Current number of students=2400+720=3120
Alternatively, the current number of students can be calculated as:
2400×(1+
100
30
)=2400×1.3=3120
The number of students increased by 30% this year.
Increase in students=30% of 2400=
100
30
×2400=720
Current number of students=2400+720=3120
Alternatively, the current number of students can be calculated as:
2400×(1+
100
30
)=2400×1.3=3120