High School

36. 38% of 550 =
A. 380
B. 55
C. 119
D. 209

37. 4 + 2 =
A. 2
B. 1
C. 1
D. 1

38. At Ruwadzano School, 72 565 bricks are required to build a classroom block and 33 290 bricks for a teacher's house. How many bricks are required altogether?
A. 105 855
B. 48 275
C. 105 745
D. 104 805

39. Which of the following is not a factor of 24?
A. 2
B. 3
C. 5
D. 6

40. Arrange 1/2 and 1/3 in an ascending order.
A. 1/2, 1/3
B. 1/3, 1/2
C. 1/2, 1/3
D. 1/3, 1/2

41. How many degrees is 3 right angles?
A. 300°
B. 270°
C. 290°
D. 235°

42. A wooden box with an engine has a gross mass of 165,245kg. The empty box weighs 45,5kg. What is the mass of the engine?
A. 210,745kg
B. 95,395kg
C. 109,745kg
D. 119,745kg

43. How many decades are between 1890 to 1980?
A. 8
B. 9
C. 90
D. 100

44. Travelling at 67km/hr a motorist took 3 hours to cover the distance. How long was the distance?
A. 22.30km
B. 201km
C. 70km
D. 180km

45. George is facing North. He turns two right angles in an anticlockwise direction. What direction is he now facing?
A. East
B. South
C. South East
D. West

46. Isheanesu spent 1/3 of his money on food and 1/4 of it on clothes. If Isheanesu had $90,00 left, calculate how much Isheanesu had at first?
A. $875,00
B. $935,00
C. $1 350
D. $1 250

47. Write 7 out of 25 as a percentage.
A. 28%
B. 72%
C. 725%
D. 18%

48. Which of the following is not a prime number?
A. 19
B. 29
C. 21
D. 23

Answer :

Let's go through each of the questions one by one:

  1. To find 38% of 550, you can use the formula for percentage calculation:
    [tex]\text{Percentage} = \frac{\text{Percentage Value}}{100} \times \text{Whole Value}[/tex]
    So, 38% of 550 is:
    [tex]0.38 \times 550 = 209[/tex]
    Therefore, the answer is D. 209.

  2. Adding 4 and 2 together:
    [tex]4 + 2 = 6[/tex]
    However, the choices do not seem relevant, so I will not select an option from the provided list.

  3. To find the total number of bricks required:
    [tex]72{,}565 + 33{,}290 = 105{,}855[/tex]
    Therefore, the answer is A. 105 855.

  4. Factors of 24 are numbers that divide 24 without leaving a remainder. Thus:

  • 2 is a factor of 24 (since [tex]2 \times 12 = 24[/tex])
  • 3 is a factor of 24 (since [tex]3 \times 8 = 24[/tex])
  • 5 is not a factor of 24
  • 6 is a factor of 24 (since [tex]6 \times 4 = 24[/tex])
    Thus, C. 5 is not a factor of 24.

  1. To arrange [tex]\frac{1}{2}[/tex] and [tex]\frac{1}{3}[/tex] in ascending order, convert them to a common denominator, if needed:

  • [tex]\frac{1}{2} = 0.5[/tex]
  • [tex]\frac{1}{3} \approx 0.333[/tex]
    Therefore, in ascending order is B. [tex]\frac{1}{3}, \frac{1}{2}[/tex].

  1. One right angle is 90°. Therefore, three right angles are:
    [tex]3 \times 90° = 270°[/tex]
    The answer is B. 270°.

  2. To calculate the mass of the engine, subtract the weight of the empty box from the gross mass:
    [tex]165{,}245 - 45.5 = 165{,}199.5[/tex]
    However, none of the options closely match this, so I will refrain from choosing.

  3. The number of decades between 1890 to 1980 can be calculated as:
    [tex]1980 - 1890 = 90 \text{ years}[/tex]
    Since one decade is 10 years, there are:
    [tex]\frac{90}{10} = 9 \text{ decades}[/tex]
    Therefore, the answer is B. 9.

  4. To find the distance traveled with a speed of 67 km/h in 3 hours:
    [tex]\text{Distance} = \text{Speed} \times \text{Time} = 67 \times 3 = 201 \text{ km}[/tex]
    So, the answer is B. 201 km.

  5. George is facing North. Turning two right angles anticlockwise gets him facing:
    [tex]2 \times 90° = 180°[/tex]
    Turning 180° anticlockwise from North leads to facing South.
    Therefore, the answer is B. South.

  6. If Isheanesu spent [tex]\frac{1}{3}[/tex] on food and [tex]\frac{1}{4}[/tex] on clothes, the amount of money spent is [tex]\frac{1}{3} + \frac{1}{4} = \frac{4}{12} + \frac{3}{12} = \frac{7}{12}[/tex].
    Therefore, the amount left is [tex]\frac{5}{12}[/tex] of the total.
    Thus,
    [tex]\frac{5}{12} \text{ of the total} = 90[/tex]
    [tex]12 \times 90 = 1080[/tex]
    [tex]\text{Total} = \frac{1080}{5} = 216[/tex]
    None of the given options match, so I'll refrain from choosing.

  7. To convert [tex]\frac{7}{25}[/tex] to a percentage:
    [tex]\frac{7}{25} \times 100\% = 28\%[/tex]
    Therefore, the answer is A. 28%.

  8. To determine the numbers which are not prime:

  • 19 is prime
  • 29 is prime
  • 21 is not prime (as it can be divided by 3 and 7)
  • 23 is prime
    Therefore, the answer is C. 21.

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