Question : The following pie chart shows the number of workers of different categories A, B, C, D, E, F, G, and H of a factory in 1995. If the number of workers in Category B increased by 10% and the number of workers in Category D decreased by 5% in 1996, then what is the total no. of workers in Categories B and D in 1996, if no. of workers in B was 1500 in the year 1995?
Option 1: 4025
Option 2: 4500
Option 3: 5000
Option 4: 4000
Correct Answer: 4025
Solution : Number of workers in Category B was 1500 in the year 1995. It is given that 15% of the workers are in Category B. So, 15% of the workers are in Category B = 1500 $\therefore$ 25% of workers in Category D $= \frac{1500}{15}×25=2500$ In 1996, the number of workers in Category B increased by 10%. So, workers in Category B in 1996 $= \frac{110}{100}×1500=1650$ In 1996, the number of workers in Category D decreased by 5% in 1996. So, workers in Category D in 1996 $= \frac{95}{100}×2500=2375$ $\therefore$ Total workers in Category B and D in 1996 = 1650 + 2375 = 4025 Hence, the correct answer is 4025.
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Question : A number is first decreased by 28% and then increased by 28%. The number so obtained is 784 less than the original number. Find the value of the original number.
Option 1: 1000
Option 2: 15000
Option 3: 10000
Option 4: 1500
Question : The length of a rectangle is increased by 10% and breadth is decreased by 10%. The area of the new rectangle is:
Option 1: neither increased nor decreased.
Option 2: increased by 1%.
Option 3: decreased by 2%.
Option 4: decreased by 1%.
Question : Study the graph and answer the question. The number of workers in the factory whose weekly earnings are below INR 7,000 is what percentage more than the number of workers whose weekly earnings are INR 7,000 or above but less than INR 8,500?
Option 1: 43.75
Option 2: 42.50
Option 3: 44.25
Option 4: 45.25
Question : The difference between the value of the number increased by 20% and the value of the number decreased by 25% is 36. Find the number.
Option 1: 7.2
Option 2: 0.8
Option 3: 720
Option 4: 80
Question : The given pie chart shows the percentage distribution of 450 employees in an organisation. Read the pie chart and answer the question that follows. What is the number of employees working in department F?
Option 1: 36
Option 2: 72
Option 3: 99
Option 4: 63
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