Solve the problems:
(1st problem) In an animal park, there were total 300 animals.
2/5 of the animals were zebras,
1/3 were monkeys and the rest were tigers.
Find the percentage of the tigers.
(2nd Problem) Ali scores 55 out of 70 marks in his Maths class assessments in January,
75 out of 90 in February and 83 out of 120 in March.
In which month did he perform the best?
Show your working clearly
Answers
Given:
(1st problem)
In an animal park, there were a total of 300 animals.
2/5 of the animals were zebras,
1/3 were monkeys and the rest were tigers.
(2nd Problem)
Ali scores 55 out of 70 marks in his Maths class assessments in January,
75 out of 90 in February and 83 out of 120 in March.
To find:
(1st problem)
Find the percentage of tigers.
(2nd Problem)
In which month did he perform the best?
Solution:
(1st problem)
Let x be the share of the number of tigers
From given, we have,
1 = 2/5 + 1/3 + x
1 - 2/5 - 1/3 = x
x = 4/15
As there are a total of 300 animals, we have,
4/15 × 300 = 80
There are a total of 80 tigers in an animal park.
The percentage of the tigers is given by,
80/300 × 100 = 26.67%
Therefore, the percentage of tigers is 26.67%.
(2nd Problem)
Ali scores
55 out of 70 marks in January
55/70 = 0.785
75 out of 90 marks in February
75/90 = 0.833
83 out of 120 marks in March
83/120 = 0.692
Since, we got, 0.833 > 0.785 > 0.692
Therefore, in February = 0.833, Ali performed the best.