Answer:
The original price of an item less a discount of 20% is 0.8p where p is the original price
Step-by-step explanation:
Here, we want to write an algebraic expression that represents the original price of an item less a discount of 20%
Let the original price of the item be p
The meaning of the ‘less’ is that we are subtracting 20% of the price from the original price ;
So 20% of the price will be 20/100 * p = 20p/100 = p/5 = 0.2p
So let’s take this away from the original price p
That will be;
p - 0.2p = p(1-0.2) = 0.8p
Answer:
Step-by-step explanation:
Given
Required
Calculate one of the root of the equation
Factorize
Split equation
Make x the subject of formula in both expressions
<em>From the list of given options, one of the roots of the equation is</em> 
Answer:
It's 74
Step-by-step explanation:
It will be positive 74 i.e, +74
Answer:
64 weeks
Step-by-step explanation:
Given that you already have $400 saved and you save $50 per week, in x weeks, you would have saved:
400 + (50 * x)
Also, given that Mr Brierley has $2000 in his bank account and he saves $25 per week, in x weeks, he would have:
2000 + (25 * x)
You and Mr Brierley would have the same amount of money when:
400 + (50 * x) = 2000 + (25 * x)
Solving for number of weeks, x, we have:
400 + 50x = 2000 + 25x
Collecting like terms:
50x - 25x = 2000 - 400
25x = 1600
x = 1600 / 25
x = 64
Hence, it will take 64 weeks for you and Mr Brierley to have the same amount of money.
