Question
In an Aerobic class, the average age of all the members
was 54.5 years, 11 members left the class and 7 new members joined. If the average age increased by 3 years and the total age decreased by 140, what was the number of members in the class initially?Solution
Let the original member be x Total age of these members = 54.5x Total age of (x – 4) members = (54.5x – 140) years According to the question, 54.5x – 140 = (x – 4) × 57.5 ⇒ 54.5x – 140 = 57.5x – 230 ⇒ 57.5x – 54.5x = 230 – 140 ⇒ 3x = 90 x = 30
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Fill in blank 7 with the appropriate word from the options.
What made the author of the above passage conclude that ’the measures to phase out fuel subsidies remain resilient’?
1)organizing          2) body             3) unit                           4) entity       ...
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