Question

Subtract 1.05 from a certain number. Multiply the difference by 0.8, add 2.84 to the product then divide the sum by 0.01 and get 700. What is the number?

Answer 1

For the answer to the question above, the answer is 6.25

Here's the solution for this,
{(x-1.05).08}+2.84 = 700
.01

0.8x-0.84+2.84 = 700
.01

0.8x + 2 = 700
.01

0.8x + 2 =700 x 0.01

0.8x = 7 - 2

0.8x = 5
0.8 .08

The answer would be 6.25

Answer 2

Answer:
The number is 6.25

Step-by-step explanation:
Assume that the number we are looking for is x

First, we will set up the equations as follows:
1- Subtract 1.05 from the number (assume the result is y):
x - 1.05 = y

2- Multiply the difference by 0.8 (assume the product is z):
0.8(y) = z

3- add 2.84 to the product (assume the result is w):
z + 2.84 = w

4- divide the sum by 0.01, the quotient is 700:
w / 0.01 = 700

Now, we will work backwards as follows:
4) w / 0.01 = 700
w = 0.01 * 700
w = 7

3) z + 2.84 = w
z + 2.84 = 7
z = 7 - 2.84
z = 4.16

2) 0.8y = z
0.8y = 4.16
y = 4.16 / 0.8
y = 5.2

1) x - 1.05 = y
x - 1.05 = 5.2
x = 5.2 + 1.05
x = 6.25

Hope this helps :)