If anyone could help with this question here it would mean so much, I can't work out the answer. Could you also provide a explanation|?

Billy invests £800 for five years in a savings account. By the end of the five years he has received a total of £96 pound interest. Work out the annual rate of simple interest.

The rate is 2.4% per year.

Step-by-step explanation:

The basic formula is Dividend equals Principal times rate times time.

Time is usually the number of years

Dividend means the same as Interest, but we can use D instead if I which is confusing. So  D=Prt

Principal is the original amount invested or deposited

You are given D = 96, P = 800  t = 5

r is unknown, that's what you have to solve to find

Put the numbers into the formula:  96 = (800) × r × (5)

Divide:  96/(800)(5) =r  That's 96 ÷ 4000 = r  Calculate that to get 0.024 and change the decimal to a percent.

That means the rate of interest is 2.4%

312312

step-by-step explanation:

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.