Math, asked by Zeminos, 10 months ago

Marks of A and B are in the ratio 5 : 7 respectively. If the marks of A is 25, then find the marks of B?

Answers

Answered by sabrinanandini2

5/7 = 25/b

5b = 175

b = 175/5

b= 35

Marks of b is 35

Zeminos: After giving a discount of 40% on an article, there is still a profit of 25%. If no discount is given, then what will be the profit percentage?

Zeminos: Can you help me solve this one too.

Zeminos: The answer is 108.33.

sabrinanandini2: Let’s call price before discount as MRP.
Not after 40% discount on MRP, you are selling it at 60% of MRP which is equal to 125% of Cost Price as profit is 25%.
So,
60*MRP/100=125*CP/100
MRP = 125*CP/60
MRP = 125*100/60 % of CP
MRP = 625/3 % of CP
MRP = 208.33% of CP
Now if you sell at MRP your profit is 108.33%.

Zeminos: Ok now i understand. Thank you so much.

sabrinanandini2: Wc

Answered by pulakmath007

The the marks of B = 35

Given :

Marks of A and B are in the ratio 5 : 7 respectively.

The marks of A is 25

To find :

The the marks of B

Solution :

Step 1 of 2 :

Write down the given ratio

Here it is given that Marks of A and B are in the ratio 5 : 7 respectively.

Step 2 of 2 :

Find marks of B

It is given that marks of A is 25

By the given condition

$\displaystyle \sf{ \frac{Marks \: of \: A}{Marks \: of \: B} = \frac{5}{7} }$

$\displaystyle \sf{ \implies \frac{25}{Marks \: of \: B} = \frac{5}{7} }$

$\displaystyle \sf{ \implies Marks \: of \: B= 25 \times \frac{7}{5} }$

$\displaystyle \sf{ \implies Marks \: of \: B= 35 }$

The the marks of B = 35

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Marks of A and B are in the ratio 5 : 7 respectively. If the marks of A is 25, then find the marks of B?​

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Marks of A and B are in the ratio 5 : 7 respectively. If the marks of A is 25, then find the marks of B?