Answer:
There will be 330 7th grade students in this middle school this year.
Step-by-step explanation:
Last year enrollment = 150 students
As the enrollment increased by 120%.
i.e.
Number of Percentage increase = 120% × 150 = 120/100 × 150
= 1.2 × 150
= 180
Thus,
Total students this year = No. of Percentage increase + Last year students
= 180+150
= 330 students
Therefore, there will be 330 7th grade students in this middle school this year.
1 is b and 2 is j and 3 is d
Amount spent = $40 - $10 = $30
Price for each bag of popcorn = Amount spent / Number of bags of popcorn bought
Price for each bag of popcorn = 30 / 12 = $2.5
Answer:Total units would be: 3+4 = 7. value of 1 unit = 28/7 = 4. ratio would be 3(4) & 4(4) = 12 & 16
Step-by-step explanation:
Answer: 12%
Step-by-step explanation:
Let the original salary be Rs a
Salary after increase = a + 40% of a
= a + 40a/100
= 140a/100
= 14a/10
= 7a/ 5
Salary after Decrease = 7a/5 - 20% of 7a/5
= 7a/5 - 20× 7a / 100 × 5
= 7a/5 - 7a/25
= ( 35a - 7a) / 25
= 28a/25
Absolute increase = 28a/25 - a
= 3a/25
Percentage = 3a/25 ×100 / a
= 3 × 4
= 12%
