<h3><u>Question:</u><u>-</u></h3>
A coca cola costs 150 yen. You buyed 30 bottles of cola and sold them at the price of 155 yen each. Find profit %
<h3><u>Answer</u><u>:</u><u>-</u></h3>
3.33%
<h3><u>Explanation</u><u>:</u><u>-</u></h3>
Cost price = ¥150
Selling price = ¥155
Total profit = Selling price - Cost price
→ = ¥155 - ¥150
→ = ¥5
Profit % = Profit × 100/cost price
️ = 5 × 100/150
️ = 10/3 = 3.33%
Answer in fraction form is -2182/3
Answer in decimal form is -727.3*
Answer in Mixed number form -737 1/3
Answer:
Step-by-step explanation:
Question: 5 - 7(z+1) = 7(-9-3z)
We multiply the number in front of the bracket first, since that is multiplication.
--> 5 -7z -7 = -63 - 21z
--> -7z -2 = -63 - 21z
Now, we move all the z and all the numbers to each side.
--> -7z +21z = -63 +2
--> 14z = -61
--> z = -61/14
This cannot be simplified further, so z is -61/14.
X^2+12x+6=0 subtract 6 from both sides...
x^2+12x=-6 halve linear coefficient, square it, and add it to both sides...
x^2+12x+36=30 now the left side is a perfect square...
(x+6)^2=30 take square root of both sides...
x+6=30^(1/2) subtract 6 from both sides...
x=-6-30^(1/2) and -6+30^(1/2)
