Speed = Distance/Time = 120 km / 2 h = 60 km/h

Total Amount = 2500(1 + 0.03)^6 = 2500(1.191016) = 2977.54

Total Amount = 3000(1 + 0.07)^5 = 3000(1.402552) = 4207.66

If the sum doubles, then the interest earned is equal to the principal. Rate = (Principal/Time) * 100 = (Principal/5) * 100 = 20%

Using the Rule of 72, Rate = 72/10 = 7.2%

0.125 = 125/1000 = 1/8 after simplification.

0.2 = 2/10 = 1/5 after simplification.

Total Amount = 1200(1 + 0.10)^3 = 1200(1.331) = 1597.20

Total Amount = P(1 + r/n)^(nt) = 1500(1 + 0.04/1)^(1*5) = 1500(1.2166529) = 1824.98

0.4 = 4/10 = 2/5 after simplification.

Amount = Principal * (1 + Rate)^Time = 2000 * (1 + 0.05)^2 = 2000 * 1.1025 = $2205

Selling Price = Cost Price + Profit = 120 + (15/100 * 120) = 120 + 18 = 138

Profit = Selling Price - Cost Price = 150 - 120 = 30. Profit Percentage = (30/120) * 100 = 25%

In 2.5 hours, the worker completes (2.5/10) = 0.25 of the task.

Total Amount = 1000(1 + 0.08)^2 = 1000(1.1664) = 1166.40

If the ratio is 3:2, then for every 3 boys, there are 2 girls. Therefore, if there are 30 boys, the number of girls = (2/3) * 30 = 20

0.75 = 75/100 = 3/4 after simplification.

0.9 = 9/10.

15% of 0.4 = 0.15 * 0.4 = 0.06

15% of 0.6 = 0.15 * 0.6 = 0.09

25% of 0.8 = 0.25 * 0.8 = 0.2

Average = (0.5 + 0.75 + 1.25) / 3 = 2.5 / 3 = 0.8333, which rounds to 0.75

Average = (0.5 + 0.75 + 1.25) / 3 = 2.5 / 3 = 0.75

Compound Interest = 5000(1 + 0.06)^4 - 5000 = 5000(1.26247696) - 5000 = 1312.38

Compound Interest = 8000(1 + 0.05)^2 - 8000 = 8000(1.1025) - 8000 = 820.00

5 divided by 8 equals 0.625.

Compound Interest = 4000(1 + 0.09)^2 - 4000 = 4000(1.1881) - 4000 = 752.40

Compound Interest = P(1 + r/n)^(nt) - P = 2000(1 + 0.05/1)^(1*3) - 2000 = 2000(1.157625) - 2000 = 315.25

7/10 equals 0.7.

0.3 = 3/10.