exam Maths Puzzle Numerical Ability

how to solve for a ellipse
1. {{{4x^2 + y^2 = 36}}}
with six steps !

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exam Other Question

How many grams of sugar must be added to 60 grams of a 32% solution to obtain a 50% solution? Smith has three times as much money as Prakash.If smith gives Rs 750 to Prakash,Prakash will have twice as much as left with smith.How much each had initially?