Question

Riya scored 15% more marks than her brother. Her brother scored 40% of 900. How much did Riya score?

Answer 1

Answer:

414 marks or 46%

Step-by-step explanation:

40% as a decimal is 0.4 as it is 40/100.

If he got 40% of 900 he got 0.4x900 marks=360 marks

If Riya got 15% more marks than her brother then she got 115% of his score as the 100% is the same marks and the 15% is because she scored 15% more than his score.

As a decimal this is written as 1.15 since 115/100=1.15.

1.15x360marks= the amount of marks Riya got which is 414 marks.

She therefore got 414/900 marks which is 46%.

Hope this helps.