The table below shows the number of the mobile phones that were sold by the…
2025
The table below shows the number of the mobile phones that were sold by the showroom in the years from 2006 to 2010. Answer the below questions based on the information given in the table.
How many percent were the mobile phones sold by showroom E in 2008 less than the mobile phones sold by showroom B in 2010?
- A.
10
- B.
12
- C.
11
- D.
34
Show answer & explanation
Correct answer: B
Concept: To find by what percentage a smaller quantity is less than a larger reference quantity, use: percentage decrease = ((Reference value - Given value) / Reference value) x 100, where the reference (larger) quantity is always the base of the calculation, not the smaller value and not the raw difference.
Application: From the table, the number of mobile phones sold by showroom E in 2008 = 239, and by showroom B in 2010 = 272.
Identify the given value (239, showroom E, 2008) and the reference value (272, showroom B, 2010).
Find the difference: 272 - 239 = 33.
Divide the difference by the reference value: 33 / 272 = 0.1213.
Multiply by 100 to convert to a percentage: 0.1213 x 100 = 12.13%.
Round to the nearest whole number: approximately 12%.
Cross-check: 12% of 272 is approximately 32.6, and 272 - 32.6 = 239.4, which matches showroom E's 2008 figure of 239, confirming the calculation.
So, mobile phones sold by showroom E in 2008 were about 12% less than those sold by showroom B in 2010.