Explanation

To find the time it takes for the amount to reach Rs. 784:

Use the formula for compound interest:

A = P(1 + r/n)^(nt)

where A = 784, P = 700, r = 4% = 0.04, n = 1 (compounded annually)

784 = 700(1 + 0.04/1)^(1t)

Divide both sides by 700:

1.1286 ≈ (1.04)^t

Take the logarithm of both sides:

t ≈ log(1.1286) / log(1.04)

≈ 3

So, it will take approximately:

3 years

Explanation

To convert 8 1/3 % to a fraction:

First, convert the mixed number to an improper fraction:

8 1/3 = (8 × 3 + 1) / 3

= 25/3

Now, convert the percentage to a fraction:

(25/3) % = (25/3) / 100

= 25 / (3 × 100)

= 25/300

Simplify the fraction:

25/300 = 1/12

Explanation

To find the price without GST:

Let the original price be x.

The GST amount is 16.5% of x:

GST = 0.165x

The sales price (including GST) is:

4248 = x + 0.165x

4248 = 1.165x

Now, divide by 1.165:

x = 4248 / 1.165

x ≈ 3646.35

Explanation

To convert 2/5 to a percentage:

First, convert the fraction to a decimal:

2/5 = 2 ÷ 5 = 0.4

Now, convert the decimal to a percentage:

0.4 × 100% = 40%

Explanation

To convert 0.50% to a fraction:

0.50% = 0.50/100

= 0.0050

To simplify:

0.0050 = 5/1000

= 1/200