b.) A farmer has sold 20% of his land to a builder. He now owns 60 acres of Land. How much did he originally own?
c.) Afetr a discount of 12% , a kitchen is priced at £4224. What was the price befor the discount?
First correct answer 10 points and all answers that are correct High Rating
1(a).
Number of workers after 1 year
= 6500*(1-14%)
= 5590
Number of workers after 2 years
= 6500*(1-14%)^2
= 4807
1(b).
Let x acres be the amount of land that the farmer originally owned.
x*(1-20%) = 60
x*80% = 60
x*0.8 = 60
x = 60/0.8
x = 75
He originally owned 75 acres of land.
1(c).
Let $x be the price of the kitchen before the discount.
x*(1-12%) = 4224
x*88% = 4224
x*0.88 = 4224
x = 4224/0.88
x = 4800
The price of the kitchen is $4800 before the discount.
1a) 6500x0.14= 910 employees
After 1 year 6500-910= 5590 employees
5590 x 0.14 = 783 employees
After 2 years 5590 - 783 = 4807 employees
Not that hard...you can do it =)