9) The present ages of Juna and Jubin are in the ratio 5:8. After 4 years the sum of their ages will be 34. Find their present ages.​

Juna's age = 10 , Jubin's age = 16

Step-by-step explanation:

The present ages of Juna and Jubin are in the ratio 5:8

After 4 years the sum  of their ages will be 34

Let us assume the present ages of Juna and Jubin to be 5x and 8x respectively.

Then,

Their age after 4 years will be (5x+4) & (8x+4)

Therfore,

Equating their ages after 4 years to 34,

we get,

= (5x+4) + (8x+4) = 34 [As, After 4 years the sum  of their ages will be 34]

= 13x + 8 = 34

= 13x = 34 - 8

= 13x = 26

= x = 26/13

= x = 2

Therefore Juna's age = 5x = 5x2 = 10 years

Jubin's age = 8x = 8x2 = 16 years.

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answer: i'm not sure

step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500