Cheryl is 3/5 as old as her mum. In 8 years time, the ratio of her age to her mom's age will be 2:3. How old is Cheryl now??
Cheryl is 3/5 as old as her mum. In 8 years time, the ratio of her age to her mom's age will be 2:3. How old is Cheryl now??
m = mum c = cheryl
(1) c=35m or m=53c
(2) c+8m+8=23 or c=23⋅(m+8)−8
c=23⋅(m+8)−8|m=53cc=23⋅(53c+8)−8c=109c+8⋅23−8c=109c+163−8|⋅99c=10c+3⋅16−729c=10c−2410c−9c=24c=24
Cheryl is now 24 years old
Cheryl is 3/5 as old as her mum. In 8 years time, the ratio of her age to her mom's age will be 2:3. How old is Cheryl now??
m = mum c = cheryl
(1) c=35m or m=53c
(2) c+8m+8=23 or c=23⋅(m+8)−8
c=23⋅(m+8)−8|m=53cc=23⋅(53c+8)−8c=109c+8⋅23−8c=109c+163−8|⋅99c=10c+3⋅16−729c=10c−2410c−9c=24c=24
Cheryl is now 24 years old