Del sells his goods for £54.60 making a 9% loss how much did he pay for the good when he bought them?

£54.65

Step-by-step explanation:

Del sells his goods for £54.60 making a 9% loss how much did he pay for the good when he bought them?

We are to find the cost price.

Loss = Cost price - Selling price

Percentage loss =

(Cost price - Selling price/Cost price) × 100

Percentage loss = 9% = 0.09

Selling price = £54.60

Cost price = x

Hence:

0.09 = x - £54.60/x × 100

0.09 = 100(x - £54.60)/x

Cross Multiply

0.09x = 100(x - £54.60)

0.09x = 100x - 5460

100x - 0.09x = 5450

99.91x = 54.50

x = 5460 / 99.91

x = 54.649184266

Approximately, x = £54.65

Therefore, the cost price = £54.65

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)