Question

17. 40% of Ram's marks is equal to 20% of Rahim's
marks which is equal to 30% of Robert's marks
If Robert's marks is 80, then find the average marks
of Ram and Rahim.
(1) 60
(2) 70
(3) 80
(4) 90
(5) None of these​

Answer 1

Answer:

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Step-by-step explanation:

Given, 40% of Ram's marks = 20% of Rahim's marks = 30% of Robert's marks.

Given, marks of Robert = 80

30% of 80 = 30/100 * 8 = 24

Given, 40% of Ram's marks = 24.

=> Ram's marks = (24 * 100)/40 = 60

Also, 20% of Rahim's marks = 24

=> Rahim's marks = (24 * 100)/20 = 120

Average marks of Ram and Rahim = (60 + 120)/2 = 90.

∴ Option d