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A box contains total 100 items which is pens and notebooks. The price of a pen and the price of a notebook is Rs. 20 and Rs.30 respectively. Total price of items in a box is Rs. 2600. Find the ratio between the number of pens and number of notebooks in a box.


1. 3 : 4
2. 2 : 3
3. 1 : 2
4. 2 : 6
5. 4 : 3

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Correct Answer - Option 2 : 2 : 3

Given:

Let number of pens and number of notebooks in a box be a and (100 - a) respectively.

Calculation:

⇒ 20 × a + (100 - a) × 30 = 2600

⇒ 20a + 3000 - 30a = 2600

⇒ a = 40

The number of pens in a box = 40

The number of notebooks in a box = 100 - 40 = 60

∴ Required ratio = 40 : 60 = 2 : 3.

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