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katrin2010 [14]

3 years ago

15

Help me with equations

1 answer:

EastWind [94]3 years ago

7 0

-- Do anything you need to do in order to get 'x' all by itself on one side and everything else on the other side. -- As soon as you do anything to one side of the equation, you must immediately do the same thing to the other side. -- That's the whole book on solving any equation with a single variable.

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2 points The compound interest on a certain sum for the first year for 4 % is Rs. 25. The compound interest for 2 years at the s

Sloan [31]

Answer:

The interest for the two years is Rs 51.

Step-by-step explanation:

Rate, R = 4 %

Compound interest for 1 year = Rs 25

Let the sum is P.

For first year,

$A = P \left ( 1+\frac{R}{100} \right )^1\\\\A = P(1+0.04)\\\\A - P = 0.04 P\\\\0.04 P = 25\\\\P= Rs625$

For 2 year

$A = P \left ( 1+\frac{R}{100} \right )^2\\\\A = 625(1+0.04)^2\\\\A = 676\\$

Interest is

Interest = Rs 676 - Rs 625 = Rs 51

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Step-by-step explanation:

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Step-by-step explanation:

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