X-2 / 5 = 16 * 2

X-2 / 5 = 16 * 2

x-2/5=16*2
x=32+ 2/5
x=32 2/5

The price of a commodity is 220 yuan. If the price is raised by 20% and then reduced by 20%, what is the price after the reduction?
If the price is increased or decreased, the percentage of increase or decrease is calculated

220(1+20%)(1-20%)=211.2
The price after the reduction is 211.2 yuan
The original comparison is price reduction
(220-211.2) / 220 = 4%, 4% lower than the original price

Given the following formula, find the integer part of a: a = 11 × 66 + 12 × 67 + 13 × 68 + 14 × 69 + 15 × 7011 × 65 + 12 × 66 + 13 × 67 + 14 × 68 + 15 × 69 × 100, what is the integer part of a?

∵ molecule: 11 × 66 = (13-2) × (68-2) = 13 × 68-2 × 13-2 × 68 + 412 × 67 = (13-1) × (68-1) = 13 × 68-13-68 + 113 × 68 = 13 × 6814 × 69 = (13 + 1) × (68 + 1) = 13 × 68 + 13 + 68 + 115 × 70 = (13 + 2) × (68 + 2) = 13 × 68 + 2 × 13 + 2 × 68 + 4 ∵ 11 × 66 + 12 × 67 + 13 × 68 + 14 × 69 + 15 × 70 = 13 × 68 × 5 + 10, and ∵ denominator: 11 × 65 = (13-2) × (67-2), 12 × 66 = (13-1) × (67-1), 1 3 × 67 = 13 × 67, 14 × 68 = (13 + 1) × (67 + 1), 15 × 69 = (13 + 2) × (67 + 2), 11 × 65 + 12 × 66 + 13 × 67 + 14 × 68 + 15 × 69 = 13 × 67 × 5 + 10, a = 11 × 66 + 12 × 67 + 13 × 68 + 14 × 69 + 15 × 7011 × 65 + 12 × 66 + 13 × 67 + 14 × 68 + 15 × 69 × 100 = 13 × 68 × 5 + 1013 × 67 × 5 + 10 × 100, the integral part of a is 101

58-4(2x+1)=10x,x=(

58-4(2x+1)=10x
58-8x-2=10x
58-4=10x+8x
18x=54
x=54÷18
x=3

If a LCD color TV is sold at 10% off the marked price, it will make a profit of 200 yuan, and a loss of 75 yuan will be sold at 85% off the marked price. How much is the purchase price of this LCD color TV?
Is it 4750 yuan?

That's right. You're right. There's a 5% difference between 25% and 10% discount, and then the price difference is 275 yuan
275 / 5% and the price is 5500
5500 * 0.9-200 to get 4750

63, 65, 67, 69, 66, 64, 66, 64, 68, 65

The frequency is 4
Because there are four in 65 and 66

(x-0.58)\1.2=1.2
Grab the sofa! The first person to answer, five stars. (the quality is also good) thank you!

x-0.58=1.44 x=2.02

During the May Day holiday, home appliance stores hold TV sales promotion activities. One of the color TV sets can make a profit of 200 yuan if it is sold at a 10% discount on the price. If it is sold at a 15% discount on the price, it will lose 75 yuan?

Price: (200 + 75) / (90% - 85%) = 275 △ 0.05 = 5500 (yuan) purchase price: 5500 × 85% + 75 = 4675 + 75 = 4750 (yuan) a: the purchase price of this color TV is 4750 yuan

How many square meters is 5 mu

1 mu is equal to 666.66 square meters
One hectare is equal to 10000 square meters
One hectare is equal to 100 square meters
5 mu is equal to 666.66 * 5 = 3333.33

Math help 54-3 (2x-6) = 30 58-4 (2 + 1) = 10 18 + 8 x-6x = 3-12

54-3（2X-6）=
30 54-6X +18 = 306X = 54 +18-30 = 7 58-4（2 +1）= 10 58-8X-4 = 108X = 58-4
+10 on August 18 + 8 x-6x = 3x-1218 + 2 x-3x = 12 x = - 12-18x = 30