The simple interest on a certain sum for 2 years at a certain rate of interest is Rs.2000 and compound interest on the same sum, same time and same rate of interest is Rs.2050. Then find the ratio between CI for 2 years and CI for 3 years?

Sonu and Titu entered into a partnership for a year in which Sonu invested Rs 120000 and Titu invested Rs 70000. After 4 months, Sonu invested Rs 80000 more whereas after 5 months, Titu invested Rs 30000 more. When two months were left Sweety also joined investing Rs 400000 as her contribution. If the profit for the year was 12.5% of 1572000, find the share of Sonu, Titu and Sweety.

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Percentage of Marks obtained by six students in six subjects

What are the total marks obtained by ‘B’ in all the subjects together ?

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Percentage of Marks obtained by six students in six subjects

Marks obtained by C in Maths are approximately what per cent of his total marks obtained in all the six subjects together ?

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Percentage of Marks obtained by six students in six subjects

What is the ratio between total marks obtained by D in Biology, Maths and English together and the total marks obtained by F in these subjects together respectively?

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Percentage of Marks obtained by six students in six subjects

What are the average marks obtained by all students in Chemistry?

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Percentage of Marks obtained by six students in six subjects

What are the average marks obtained by all the students in Maths ?

If a sailer sails 12 km distance within 5 hours against the flow of a river. If he sails 22 km distance in same time along the flow of the river. Then velocity of the river is _______