Answer:
- A mother is three times as old as her daughter. Six years ago, the mother's age was six tines that of her daughter. How old are they now?
- Taylor is five times as old as Spenser. The sum of their ages is eighteen. How old are Taylor and Spencer?
- A coin collection amounting to $25 consists of nickels and dimes. There are 3 times as many nickels and dimes. There are 3 times as many nickels as dimes. How many coins of each kind are there
Step-by-step explanation:
Solution for no.1:
Let x represent the daughter's age.
Therefore, 3x is the mother's age.
6(x - 6) = 3x - 6
6x - 6 = 3x - 6
3x = 30
x = 10
Therefore, the daughter's is 10 years old and the mother is 30 years old.
Solution for no.2:
Let x represent Spenser's age
Therefore, Taylor's age is 5x
x + 5x = 18
6x = 18
x = 3
Therefore, Spenser is 3 years old and Taylor is 15 years old.
Solution for no.3:
Let x = number of dimes
3x = number of nickels
10x + 5(3x) = 2500
25x = 2500
x = 100
Therefore, there are 100 dimes and 300 nickels.
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