emilyyisonn05x emilyyisonn05x
  • 26-09-2020
  • Mathematics
contestada

Sara is 7 years older than Sushil. June is 4 years younger than Sushil. If the total of their ages is 87, how old is the eldest of them?

Respuesta :

iuhihpiuhvphp iuhihpiuhvphp
  • 26-09-2020

Answer:

76

Step-by-step explanation:

Answer Link
matt6791 matt6791
  • 26-09-2020

Answer:

We have:

a) Sushi+7=Sara

b) June=Suhi-4

c) Sushi+Sara+June=87

3 equations with 3 variables, we can solve it.

we can introduce in a) and b) in  c) and we get: Sushi+Sushi+7+ Sushi-4=87

3 sushi+3=87 which gives:

3 sushi= 87-3=84

sushi=84/3=28

Sara= sushi+7 (from b)= 35

June= sushi-4=24

We can check 24+35+28=87 All good

Step-by-step explanation:

Answer Link

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