Work out the value of x when
X – 20 : x + 280
simplifies to
1:4

x = 120

Step-by-step explanation:

Express the ratios as equivalent fractions, that is

= ( cross- multiply )

4(x - 20) = x + 280

4x - 80 = x + 280 ( subtract x from both sides )

3x - 80 = 280 ( add 80 to both sides )

3x = 360 ( divide both sides by 3 )

x = 120

answer: huh

step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles