If the ratio of production of three different companies A , B and C is 4:7:5…
2023
If the ratio of production of three different companies A , B and C is 4:7:5 and of overall production last year was 4 lac tones and if each company increased its production by 20% , then what is the production of company B this year ?
- A.
1.2 L
- B.
2.1 L
- C.
4.1 L
- D.
1.5 L
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Correct answer: B
Answer: 2.1 L
Let the productions of companies A, B and C be 4x, 7x and 5x respectively.
Total parts = 4 + 7 + 5 = 16, so 16x = 400,000 ⇒ x = 400,000 / 16 = 25,000.
Last year production of company B = 7 × 25,000 = 175,000.
After a 20% increase: production this year = 175,000 × 120/100 = 210,000 = 2.1 Lac.
Key idea: convert the ratio to actual amounts using total production, then apply the percentage increase.