Question

Laura is three times as old as Luci. In 5 years, the sum of their ages will be 30. What are the current ages of Laura and Luci?

Answer 1

Answer:

Laura = 15 , Luci = 5

Step-by-step explanation:

                Now:                            In 5 yrs:                      

Laura =      3x                                     3x+5

Luci   =        x                                       x+5

Equation: 3x+5+x+5 = 30

                    4x+10 = 30

                         -10    -10

                         4x = 20

                           x = 5

 In conclusion, Laura = 3x = 15 & Luci = x = 5

Answer 2

The current ages of Laura and Luci is 15 years old and 5 years old.

Organizing the information given in the statement we have that:

• Laura is three times as old as Luci
• the sum of their ages will be 30

performing a rule of 3 with the given information we have that:          

$3x+5+x+5 = 30\\ 4x+10 = 30\\ 4x = 20\\ x = 5$

If  Laura = 3x = 15 and Luci = x = 5

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