Compounded annually.
6. Calculate the amount and compound interest on Rs. 62,500 for 1 year at 10% Per annum
compounded half yearly.
7. 72% of 25 students are good in mathematics. How many are not good in mathematics?
Answers
Answer:
Step-by-step explanation:
6. Principal (P) = Rs 62,500
Rate = 8% per annum or 4% per half year
Number of years = 1 1/2
There will be 3 half years in 1 1/2 years.
A = p(1 + R/100)n = Rs [62500(1 + 4/100)3]
= Rs (62500 x 26/25 x 26/25 x26/25)
= Rs 70304
C.I. = A − P
= Rs 70304 − Rs 62500
= Rs 7,804
7. if , students good in math = 72%
Total no. of students= 25
then, percent are used to have 100.
Therefor, 72×25÷100
= 18
Then , no of students good in math = 18
Total no. Of student = 25
Therefore, Students not good in maths = total no. of students - no. Of students good in maths
= 25–18
= 7
The no. Of students not good in maths are 7.
Answer:
7. 7
Step-by-step explanation:
7. Total no. of students = 25
Percentage of students good in mathematics = 72%
therefore, no. of students good in mathematics
= 25 x 72/ 100
= 18
therefore, no. of students not good in mathematics = 25 - 18
= 7