Question

in an exam the marks scored by preeti are 60% of the total marks scored by preeti and simran. if preeti scoree 80% of the maximum marks, simran scored what percentage ot the maximum marks?

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Given :

In an exam the marks scored by Preeti are 60% of the total marks scored by Preeti and Simran.

To Find :

If Preeti scoree 80% of the maximum marks, Simran scored what percentage ot the maximum marks?

Solution:

Let the maximum marks be x

Let y be the marks scored by Simran

Preeti scoree 80% of the maximum marks

Preeti scored marks = 0.8x

The marks scored by preeti are 60% of the total marks scored by preeti and simran.

Preeti scored marks = 0.6(0.8x+y)

So,$0.8x=0.6(0.8x+y)\\0.8x=0.48x+0.6y\\0.32x = 0.6y\\\frac{0.32x}{0.6}=y\\0.533x=y$

So, Percentage of Simran =$\frac{0.533x}{x} \times 100 =53.3\%$

Hence Simran scored 53.3 %