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Ramesh is 70% more efficient than Rakesh, but 20% less efficient than Vijay. If Rakesh is 40% more efficient than Suresh, and Vijay is 15% less efficient than Dinesh, then Dinesh is what percent more efficient than Suresh?

Ramesh is 70% more efficient than Rakesh, but 20% less efficient than Vijay. If Rakesh is 40% more efficient than Suresh, and Vijay is 15% less efficient than Dinesh, then Dinesh is what percent more efficient than Suresh? Correct Answer 250%

Given:

Ramesh is 70% more efficient than rakesh but 20% less efficient than Vijay

Rakesh is 40% more efficient than Suresh

Vijay is 15% less efficient than Dinesh

Calculation:

Let efficiency of Vijay be 100%

⇒ Efficiency of Ramesh = 80%

⇒ Efficiency of Rakesh = (80/170) × 100% = 800/17%

⇒ Efficiency of Suresh = (800/17) × (1/140) × 100% = 4000/119%

⇒ Efficiency of Dinesh = (100/85) × 100% = 2000/17%

Dinesh is more efficient than Suresh by =  × 100

⇒  × 100

⇒ 250%

∴ Dinesh is 250% more efficient than Suresh

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