Maths-
General
Easy
Question
The results of an international survey of contact lens fittings during a given time period are summarised in the table and bar graph above. The table shows the number of total fittings and the mean age, of the patients who were fitted for the contact lenses during the time period. The total fittings consisted of new contact lens fittings and refittings. The bar graph shows the percent of the patients who received new fittings and the percent who received refittings.
Of the following, which best approximated the number of patients surveyed who received refittings in New Zealand?
- 274
- 358
- 447
- 585
The correct answer is: 447
Hint:
Total fittings in New Zealand = 721 (table given)
Step-by-step solution:-
From the graph given, we can observe that the % of new fittings (represented with grey shade) ≈ 38%
∴ % of refittings = 100 - 38 = 62%
∴ Number of patients who received refittings in New Zealand
= total fittings in New Zealand * % of refittings in New Zealand
= 721 × 62 %
≈ 447
Final Answer:
Option C i.e. 447 is the correct Option.
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