The income of the store this month is 200000 yuan. If it pays 6% tax, how many million yuan will it pay this month

The income of the store this month is 200000 yuan. If it pays 6% tax, how many million yuan will it pay this month

This month's tax = 20 * 6% = 12000 yuan

For example, if the purchase price of a commodity is 7 yuan and you want to make a 20% profit, how can you work out the formula

Profit = cost * profit rate = 7 * 20% = 1.4 yuan
Price = cost + profit = 7 + 1.4 = 8.4 yuan

How to set a price for a commodity? For example, if my purchase price is 5.5 yuan, how much can I sell to achieve 60% profit? How to calculate? What's the formula?

5 times 0.6 is what you add,

The calculation formula of profit
For example, if the price is 10 yuan, the cost is 8 yuan, the profit is 2 yuan, and the profit margin is 20%. If the price is 30 yuan, the profit margin of 20% is 6 yuan, and the profit margin = profit / cost × 100% = (sold price / cost-1) × 100% is wrong

Your discount algorithm is certainly wrong. There are two algorithms for calculating profit, one is forward addition algorithm, and the other is back deduction algorithm. Generally, enterprises use back deduction algorithm when calculating profit margin, that is, retail price cost price / retail price = actual profit margin (e.g., cost 10 yuan, selling price 15 yuan, algorithm: 15-10 / 15 = 33.33%, that is, profit margin: 33.33%). This is the standard profit margin accounting method

The calculation formula of profit rate
For example, each basketball price 100 yuan, sell 200 yuan
Is my profit margin 50% or 100%
That is: is the profit margin divided by the purchase price or the selling price?

Profit rate = profit △ cost (purchase price) × 100%
For example, each basketball costs 100 yuan and sells for 200 yuan
Then the profit amount is 200-100
Profit margin = 100 △ 100 × 100%
=1×100%
=100%
That is: the profit margin is the profit divided by the purchase price (cost)

1. What is the calculation formula of sales profit margin?
2. For example, if the purchase price is 120 yuan and the profit is 72 yuan, what is the profit margin of sales?

Solution 1: profit margin = selling price ／ cost - 1
=Profit / cost
=(selling price cost) △ cost
Solution 2: sales profit rate = 72 △ 120 = 0.6

Mathematics of grade one in Senior High School
If a1 + a3 = 8, A5 + A7 = 4, then A9 + a11 + A13 + A15=

The proportional sequence is A5 + A7 = (a1 + a3) * q ^ 4
q^4=4/8=1/2
a9+a11+a13+a15=(a1+a3+a5+a7)*q^8=(8+4)*1/4=3

The sum of the first n terms of the equal ratio sequence is SN. For any positive integer, the point (n, Sn) is on the image of the function y = B ^ x + R (b > 0, B is not equal to 1)
Finding the value of R
It is proved that: (3 * 5 * 7 *... * (2n + 1)) / (2 * 4 * 6 *... * 2n) > radical n + 1 holds (n belongs to positive integer)

1) Let {an} Sn = B ^ n + R get A1 = B + R, A2 = B ^ 2-B, A3 = B ^ 3-B ^ 2, and A2 ^ 2 = A1 * A3 get r = - 1
2) Using mathematical induction
Let f (n) = (3 * 5 * 7 *... * (2n + 1)) / (2 * 4 * 6 *... * 2n), G (n) = root n + 1
1： When n = 1, f (1) = 1.5, G (1) = 1.414 is obviously true
2： Suppose that f (k) > G (k) holds when n = k, then
F (K + 1) = f (k) * (2k + 3) / (2k + 2), G (K + 1) = g (k) * (radical K + 2) / (radical K + 1), so we only need to prove that
(2k + 3) / (2k + 2) > (radical K + 2) / (radical K + 1)
The above formula holds when K + 1 > 0, that is, when n = K + 1
Proof of proposition

It is known that all items of the equal ratio sequence {an} are positive numbers which are not equal to 1, and the sequence {BN} satisfies BN = lnan, B3 = 18, B6 = 12, then the maximum sum of the first n items of the sequence {BN} is______ ．

All of the items of the number {{\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\-2n, when n = 12, BN = 0, when n ≥ 12, When the first n terms of BN ＜ 0  {BN} and Sn take the maximum value, n = 12, the maximum value of Sn is S12 = 122 (B1 + B12) = 6 (24-2 + 24-24) = 132

1. Given A5 = 8, a7 = 16, find A1 and common ratio Q
2. Given A3 = 2, common ratio q = - 1, find A15

1. A5 = A1 * Q4, a7 = A1 * Q6, so A7 / A5 = Q2, even if Q, then A1 can be calculated
2. A15 = A3 * Q12
This is a very basic thing. You can push it out by yourself. You don't have to be so lazy! One question you think of is better than ten questions others tell you. Hurry up! Coffee and milk