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Deepak BoraNewbie

Asked: July 16, 2020In: ICSE

Ratio and proportion

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Ratio and proportion ICSE

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Deepak BoraNewbie

Asked: July 16, 2020In: ICSE

if b is the mean proportional between a and c , prove that (ab + bc )is the mean proportional between (a^2 + b^2) and (b^2 + c^2)

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Ratio and proportion

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Deepak BoraNewbie

Asked: July 16, 2020In: ICSE

what number must be added to each of the numbers 16,26and 40 so that the resulting numbers may be in continued proportion.

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Ratio and proportion

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Deepak BoraNewbie

Asked: July 16, 2020In: ICSE

what number should be subtracted from each of the numbers 23,30,57 and 78 so that the remainders are in proportion,

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Ratio and proportion

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Deepak BoraNewbie

Asked: July 16, 2020In: ICSE

If a ,12,16 and b are in continued proportion , find a and b

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Ratio and proportion

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Deepak BoraNewbie

Asked: July 16, 2020In: CBSE, ICSE

A two digit number is such that the product of the digits is 12. When 36 is added to the number, the digits interchange their places. Find the number.

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find a two digit number, quadratic equations word problem.

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Deepak BoraNewbie

Asked: July 16, 2020In: CBSE, ICSE

A train travels 360 km at a uniform speed. If the speed had been 5 km/h more, it would have taken 1 hour less for the same journey. Find the speed of the train.

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quadratic equations, chapter 4 ncert maths solutions, exercise 4.3 question 8

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