Question

In 2016, what per cent of the total revenue came from books?

• A. 45%
• B. 55%
• C. 35%
• D. 25%

Hint:

Always total the three categories for the given year, then divide the required category by that total.

Answer 1

The Correct Option is A

From the graph (in lakh): in 2016, Books $=75$, Magazines $=45$, Journals $=45$ (reading to the nearest tick).
Total $=75+45+45=165$.
Share of Books $=\dfrac{75}{165}\times 100 = 45\%$.
\[ \boxed{45\%} \]

Answer 2

Instead of dividing 75 by 165 directly, the three revenue figures can first be reduced to their simplest whole-number ratio.

Reducing to a ratio. In 2016 (in lakh): Books \(=75\), Magazines \(=45\), Journals \(=45\). Dividing each by their common factor 15: \[ 75:45:45 = 5:3:3. \]

Converting the ratio to a percentage. Total parts \(=5+3+3=11\). Books' share \(=\dfrac{5}{11}\times100\approx45.45\%\approx45\%\).

1. Option 45%: Matches \(5/11\approx45.45\%\), which rounds to 45%.
2. Option 55%: Would require Books to be well over half the total, which doesn't match the \(5:3:3\) ratio; ruled out.
3. Option 35%: Would require Books to be a smaller fraction of the 11 parts than 5; ruled out.
4. Option 25%: Would require Books to be roughly \(1/4\) of the total, i.e. close to \(2.75\) parts out of 11, far less than the actual 5 parts; ruled out.

The simplified ratio confirms Books make up just under half — specifically \(5/11\) — of the total revenue.

So the correct answer is 45%.