Question

Work out

1. Five is added to a number and the result is multiplied by five the product is 5. Find the original number

2. The elder brother is 6 years older than the younger brother. The sum of their ages is 26. Find the age of the younger and older brother respectively.

3. Three over two of a number is one tenth then what is a number?

4. Show that 2x-6 > 4 and 2x - 8>2 are equivalent

5. Solve for x 8x - 0.00932 = 7x + 0.00843

6.2 1/2 mts, 120cm

a. Calculate the ratio of the first number to the second
b. calculate the ratios of the second number to the second​

Answer 1

Answer:

1. -4

2. 10 & 16 yrs

3. 1/15

Step-by-step explanation:

1. Let the no. be x,

5 (x + 5) = 5

5x + 25 = 5

5x = 5 - 25

5x = -20

x = -20/ 5

= -4

2. Let the age of younger brother be x,

age of older brother = x + 6

so, x + (x+ 6) = 26

2x + 6 = 26

2x = 20 - 6 = 20

x = 20/2 = 10

therefore, age of younger brother = 10 and elder brother = 16

3. Let the no. be x,

3x/2 = 1/10

3x = 2/10

x = 2/10 × 1/3

= 2/30 = 1/15

Hope my answers could help you :)

Thank you!