75%
- Step 1: Identify values. Monday: 150, Friday: 250.
- Step 2: Calculate increase. Increase = $250 - 150 = 100$.
- Step 3: Calculate percentage increase. Formula: $\left(\frac{\text{Increase}}{\text{Initial}}\right) \times 100 = \left(\frac{100}{150}\right) \times 100 = 66.67%$.
- Step 4: Verify with options. 66.67% matches option (2).
- Step 5: Cross-check. $150 \times 0.6667 = 100$, so $150 + 100 = 250$, which is Friday’s value.
- Step 6: Final conclusion. Option (2) 66.67% is the correct answer.
A bar graph shows the number of students in 5 departments of a college. If the average number of students is 240 and the number of students in the Science department is 320, how many students are there in total in the other four departments?
A pie chart shows the distribution of students across 5 faculties in a university. If 20% are in Arts, 25% in Science, 15% in Law, 30% in Engineering, and the rest in Commerce, what is the angle (in degrees) for Commerce?
In a sequence of numbers, each term is generated by multiplying the previous term by 2 and then subtracting 1. If the first term is 3, what is the fourth term in the sequence?