Practical Mathematics

73 questions available

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All Age Problems 12 Mixture Problems 1 Partnership 1 Clock Problems Calendar 1 Unit Conversion 48 Word Problems 7 Mathematical Formulas 3
Showing 21–40 of 73

Q21.How many days are there in one week?

Medium
A 2
B 3
C 5
D 7
Calendar PPSC

Correct Answer: D

A standard calendar week has exactly 7 days.

Q22.The ratio of A and B's ages is 6:5. After 5 years, it becomes 9:8. What is their age difference?

Medium
A 5 years
B 6 years
C 10 years
D 5/3 years
Age Problems PPSC

Correct Answer: D

Let ages be 6x and 5x. After 5 years: (6x+5)/(5x+5) = 9/8 => 48x+40 = 45x+45 => 3x=5 => x = 5/3. The constant age difference is 6x - 5x = x = 5/3 years.

Q23.Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is the difference between R and Q's age?

Medium
A 1 year
B 2 years
C 25 years
D Data inadequate
Age Problems PPSC

Correct Answer: D

Q is younger than R by R - Q, and older than T by Q - T. R - Q = Q - T => R + T = 2Q. Sum of R and T is 50, so 2Q = 50 => Q = 25. Since individual ages of R and T are unknown, R - Q = 25 - T cannot be determined.

Q24.Ali's age is double Anwar's age. In 6 years, the ratio of their ages will be 23:13. What is Ali’s current age?

Medium
A 40 years
B 28 years
C 30 years
D 32 years
Age Problems PPSC

Correct Answer: A

Let Anwar = x, Ali = 2x. After 6 years: (2x+6)/(x+6) = 23/13 => 26x + 78 = 23x + 138 => 3x = 60 => x = 20. Ali's age is 2x = 40 years.

Q25.Which number when multiplied by 13 (or added to itself 13 times in test notation) gives 104?

Medium
A 6
B 11
C 8
D 13
Word Problems PPSC

Correct Answer: C

The test implies 13x = 104. Solving for x: x = 104 / 13 = 8.

Q26.How many seconds in five minutes?

Medium
A 200
B 100
C 300
D 400
Unit Conversion PPSC

Correct Answer: C

There are 60 seconds in a minute, so in 5 minutes there are 5 * 60 = 300 seconds.

Q27.How many hours are there in 2700 minutes?

Medium
A 40 hours
B 42 hours
C 45 hours
D 48 hours
Unit Conversion PPSC

Correct Answer: C

2700 / 60 = 45 hours.

Q28.1 square feet is equal to :

Medium
A 24 square inches
B 48 square inches
C 72 square inches
D 144 square inches
Unit Conversion PPSC

Correct Answer: D

1 square foot = 12 inches * 12 inches = 144 square inches.

Q29.A bus with 32 data lines can transport how many bits at a time?

Medium
A 8 bits
B 16 bits
C 32 bits
D 1024 bits
Unit Conversion PPSC

Correct Answer: C

Each data line carries 1 bit of data. Therefore, a 32-line bus carries 32 bits of data in parallel at a time.

Q30.A runner runs 3 miles every Sunday. Each day before Sunday, he runs 1 mile. Find total miles run in 2 weeks.

Medium
A 14
B 16
C 18
D 21
Word Problems PPSC

Correct Answer: C

In 1 week: 1 Sunday (3 miles) + 6 other days (6 * 1 mile) = 9 miles. In 2 weeks: 9 * 2 = 18 miles.

Q31.There are 40 animals in a zoo and per animal 20 packets of milk is required. One pack of milk contains 200 ml of milk, and milk costs 4.6 pesos per litre. If the employees of the zoo fulfil only 80% of the animal's intake of milk what will be the expenditure of the zoo?

Medium
A 546.9
B 576.5
C 579.6
D 588.8
Unit Conversion PPSC

Correct Answer: D

Total packets needed = 40 × 20 = 800. Total volume in ml = 800 × 200 ml = 160,000 ml = 160 liters. At 80% fulfillment: 160 liters × 0.80 = 128 liters. Total cost = 128 liters × 4.6 pesos/liter = 588.8 pesos.

Q32.Convert 158°F into Celsius (°C)?

Medium
A 50
B 60
C 70
D 80
Unit Conversion PPSC

Correct Answer: C

Using the Celsius conversion formula: °C = (°F - 32) × 5/9. Substituting 158: °C = (158 - 32) × 5/9 = 126 × 5/9 = 70°C.

Q33.A car covers 2 km using 15 liters of fuel. Fuel costs Rs. 90 per liter. How much distance can the car cover for Rs. 450?

Medium
A 1 km
B 2 km
C 10 km
D 665 m
Unit Conversion PPSC

Correct Answer: D

Fuel for Rs. 450 = 450 / 90 = 5 liters. Distance for 15 liters = 2 km => 1 liter = 2/15 km => 5 liters = 10/15 km = 2/3 km ≈ 665 meters.

Q34.Amir is older than Nadeem by 4 years and Danish is younger than Saleem by 4 years, but Saleem's age is 1/4th of Amir's. If Danish's age is 8 years, how many times is Nadeem in age to Saleem?

Medium
A 3
B 4
C 11/3
D 5
Age Problems PPSC

Correct Answer: C

Danish is 8. Danish = Saleem - 4 => Saleem = 12. Saleem = 1/4 of Amir => Amir = 48. Amir = Nadeem + 4 => Nadeem = 44. Ratio of Nadeem to Saleem = 44 / 12 = 11/3.

Q35.1 mega is equal to:

Medium
A 10000
B 100000
C 10000000
D 1000000
Unit Conversion PPSC

Correct Answer: D

Mega is a metric prefix denoting a factor of one million (10^6 or 1,000,000).

Q36.1 Gaj is equal to how many Yards?

Medium
A 0.91 yards
B 1.09 yards
C 1 yard
D 0.75 yard
Unit Conversion PPSC

Correct Answer: C

Gaj is a traditional unit of length in South Asia. 1 Gaj is exactly equal to 1 Yard.

Q37.1 Gunta is equal to how many square yards?

Medium
A 100 sq yards
B 110 sq yards
C 121 sq yards
D 150 sq yards
Unit Conversion PPSC

Correct Answer: C

By South Asian land measurement conventions, 1 Gunta is equal to 121 square yards.

Q38.1 Gunta is equal to how many square meters?

Medium
A 100.25 sq meters
B 120.55 sq meters
C 101.171 sq meters
D 110.00 sq meters
Unit Conversion PPSC

Correct Answer: C

By South Asian land measurement conventions, 1 Gunta is equal to 101.171 square meters.

Q39.How many articles are there in 1 gross?

Medium
A 12 articles
B 120 articles
C 144 articles
D 172 articles
Unit Conversion PPSC

Correct Answer: C

1 gross equals 12 dozen. 1 dozen = 12 items. So 12 * 12 = 144 articles.

Q40.What is the correct number of papers in 1 Ream?

Medium
A 100 papers
B 200 papers
C 500 papers
D 1000 papers
Unit Conversion PPSC

Correct Answer: C

A standard ream of paper contains exactly 500 sheets.