AMCAT Percentages Quiz-1

Answer: 250
Given,
Prajwal got 85 and failed by 15.
The minimum marks = 85 + 15 = 100
Minimum % to pass = 40%
Therefore, total marks = 40/100 = 100
40 = 10000
Total marks = 250

Answer : 900
Explanation:
Suppose originally Ashok had x apples.
Then, (100 - 50)% of x = 450.
50/100 * x = 450
x = (450 x 100)/50 = 900.

Answer: 36

No of run scored: 100
Total Run scored with boundaries = 4*4 + 8*6 = 16 + 48 = 64
Total score scored while running = 36
Percent = 36/100 * 100 = 36%

Answer: 520
Final Price = Initial price + Initial price x 30/100
= Initial price x (1+30/100)
= Rs400x(1.3)
= Rs.520

Answer: 600, 10%
Explanation:
S.I for 5 years = 1020 - 720 = 300
[Amount for 2 years = 720, A for 7 years = 1020, the difference gives S.I for 5 years]
S.I for each year = 300/5 = 60
Amount after 2 years = 720
S.I for 2 years = 120
Hence P = 720 - 120 = 600
S.I = P*R*T/100
60 = 600*R*1/100
R = 10%
Hence, Sum = 600 and rate% = 10

Correct Option: 86
Total maximum marks = 100 + 120 + 150 = 370
Total marks in History and English = 115 + 95 = 210
Total marks required by him to get 80% = 370 × 80% = 296
So, he needs 296 – 210 = 86 marks to score 80%.

Answer: 3570
Sol:
Saving = 60% of 70 %( 100-30) of 85 %( 100-15) of 30000

= (60/100) * (70/100) * (85/100) * 30000

= 3570

Correct Option: 23.80
Total number of hours in a week = 24 × 7 hrs
Hours spend by Aryan = 5 × 8 hrs
Required percentage = (5 × 8 hrs )/ (24 × 7 hrs) × 100
= 23.80%

Answer: 38.18 %
Sol:
Let x% of 55 = 21
Therefore, x/100 * 55 = 21
=>55x = 2100
=>x = 38.18%

Answer: 1200
Sol:
Let the original no. of shares be X
Since he sold 45% of these shares, and is now left with 55% = 770 shares
Or 770= 55*X/100 therefore X = 770*100/55 = 1400 shares.
Hence total no. of shares = 1400