Explanation:
To find the marks Shahid should get on the fifth paper, we first need to calculate the total marks he has obtained in the first four papers. Since the average mark of Shahid in the first four papers is 88, the total marks he has obtained in these four papers is 4 × 88 = 352.
Now, to achieve an average of 90 in all five papers, the total mark he should have in all five papers is 5 × 90 = 450.
To find the marks needed on the fifth paper, we subtract the total marks he already has (352) from the desired total marks (450).
450 − 352 = 98
So, Shahid should get 98 marks on the fifth paper.
Explanation:
Let's say Mr. Qasim's current age is x and Sajid's is y.
Mr. Qasim is 24 years older than Sajid: x = y + 24.
In 8 years, Mr. Qasim's age will be twice Sajid's: x + 8 = 2 (y+8).
Solving, we find y = 16 (Sajid's age) and x = 40 (Mr. Qasim's age now).
Explanation:
30 people take 4 days to complete the task, which totals 120 "man-days." To find out how many days 40 people would take, we divide the total man-days (120) by the number of people (40), which equals 3 days.
Explanation:
3.14 x 10^6 means "3.14 multiplied by 1 followed by 6 zeros," which equals 3,140,000
Explanation:
To find what percent of 40 is 16, divide 16 by 40 and then multiply by 100 to get the percentage:
16/40 × 100 = 40%
Explanation:
The alarm beeps 16 times in one minute. To find out how long it takes for 88 beeps, we divide 88 by 16. The result is 5.5 minutes.
Explanation:
To find the area of the rectangular room, we multiply its length by its width. The answer is B. 270 square feet.
Explanation:
The percent increase is calculated by dividing the increase in population (20,000) by the initial population (80,000) and then multiplying by 100. This gives a percent increase of 25%.
Explanation:
To find the values of 𝑎 and 𝑏, we can solve the equations:
a + 4 = 10
b +10 = 4
From the first equation, we find that a = 6.
From the second equation, we find that b = −6.
Therefore, a + b = 6 + (−6) = 0.
Explanation:
The sum of the first 45 natural numbers is 1035.
Explanation:
The lowest common multiple (LCM) of 24, 36, and 40 is 360.
