Question

4. In an exam, the ratio of Ajay's marks and Balu's
marks is 4 : 5. If each of them had scored 36 more
marks, the ratio of their marks would be 7: 8. Find Passing mark
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Answer 1

Let Ajay's and Balu's marks be 4X and 5X respectively.

(4X+36)/(5X+36) = 7/8

8(4X+36) = 7(5X+36)

32X + 288 = 35X + 252

3X = 36

X =12

So, Balu's marks = 5X = 60

It was too easy, just try with yourself once.

Answer 2

Given; In an exam, the ratio of Ajay's marks and Balu's

marks are 4: 5. If each of them had scored 36 more

marks, the ratio of their marks would be 7: 8

To Find; passing marks

Solution; It is given that  In an exam, the ratio of Ajay's marks and Balu's

marks arere4: 5. If each of them had scored 36 more marks, the ratio of their marks would be 7: 8

Let the marks of Ajay = 4x

Balus marks = 5x

if their marks are increased by 36

4x+ 36/ 5x + 36 = 7/ 8

8(4x +36) = 7 (5x+36)

24x + 8*36 = 35x + 36*7

36 = 11x

x= 36/11

Hence the value of x is 36/11