Answer:
a 3
Step-by-step explanation:
You make 50 a day plus 3.60 per sale
Income = 50+ 3.6 s
You want to make at least 60
60 ≤ 50+ 3.6 s
Subtract 50 from each side
60 -50 ≤ 50-50 +3.6s
10 ≤ 3.6s
Divide by 3.6 on each side
10/3.6 ≤ 3.6s/3.6
2.7777777 ≤ s
You must make more than 2.7777 sales
But you cannot make part of a sale so
You must make at least 3 sales
Answer:
no it is not
Step-by-step explanation:
Answer:
30% profit
Step-by-step explanation:
The amount by which the shopkeeper reduced the advertised selling price = 20%
The resulting profit over the cost price = 4%
Let x represent the initial advertised selling price, and let y represent the new selling price, and let c represent the cost price, we have;
x - 20% of x = y
x - x × 20/100 = y
0.8·x = y
y = c + 4% of c = 1.04·c
∴ 0.8·x = 1.04·c
x = 1.04·c/0.8 = 1.3·c
x = 1.3·c = c + 0.3·c = c + 30% of c
x = c + 30% of c
From which we have that the initial advertised selling price, x = The cost price + 30% of the cost price
Therefore, the initial advertised selling price = The cost price + 30%profit on cost price.
The shopkeeper would have made 30% profit if the dress had then been sold at the original selling price.
Answer:
tan² A = 
Step-by-step explanation:
Using the identity
tan²x + 1 = sec²x , that is
tan² A = sec² A - 1
= (
)² - 1
= 
- 1
=
