book Maths Puzzle Numerical Ability

I have a question concerning using quadratic equations to solve word problems.
Here is the question;
Find two positive numbers in the ratio 2:3 whose product is 2400.
I need to

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Goodevening, could u help me again for these problems, but i try i am not sure a bout its answer.. please help me.

Number 1 and 2 based on the information
Bank credit Either perform the indicated operation or solve the equation, whichever is appropriate.

3/10 = 5/x