Q.9.In an examination A got 10% marks less than B, who got 25% marks m

1.	Q.9.In an examination A got 10% marks less than B, who got 25% marks more than C, who got 20%marks less then D. If A got 360 marks out of 500, then percentage of marks obtained by D was?
Answer» A got 369/500 * 100 = 72%This was 90% of B. So B = 72 * 100 / 90 = 80%. This was 125% of C. So C = 80 * 100 / 125 = 64%. This was 80% of D. So D = 64 * 100 / 80 = 80%.So D got 80% marks.

Q.9.In an examination A got 10% marks less than B, who got 25% marks more than C, who got 20%marks less then D. If A got 360 marks out of 500, then percentage of marks obtained by D was?

Answer»

A got 369/500 * 100 = 72%This was 90% of B. So B = 72 * 100 / 90 = 80%.

This was 125% of C. So C = 80 * 100 / 125 = 64%.

This was 80% of D. So D = 64 * 100 / 80 = 80%.So D got 80% marks.