Question

Solve for each proportion

Answer 1

• 7) r = 20/7
• 8) x = 27/2

Explanation:

7) r/2 = 10/7, value of r?

→ r/2 = 10/7

→ r = (10/7) × 2

→ r = (10 × 2)/7

→ [ r = 20/7 ]

Hence, value of r is 20/7.

8) 9/4 = x/6, value of x?

→ 9/4 = x/6

→ x/6 = 9/4

→ x = (9/4) × 6

→ x = (9 × 6)/4

→ x = 54/4

→ [ x = 27/2 ]

Hence, value of x is 27/2.

Answer 2

r = 20/7

x = 13.5

Explanation:

Hello!

7)

Solve for r by cross-multiplying:

• 
  `\frac r2 = \frac {10}7`
• 
  `r*7 = 10 * 2`
• 
  `7r = 20`
• 
  `r = \frac{20}7`

The value of r is 20/7.

8)

Solve for x by cross-multipying:

• 
  `\frac 94 = \frac x6`
• 
  `9*6 = 4*x`
• 
  `4x = 54`
• 
  `x = 13 \frac12`

The value of x is 13.5.