Nora’s father said to her, our joint ages are 78 years and i am five times as old as you. what we’re their ages?

Nora is 13 years old and her father is 65 years old.

Let's say that Nora is x years old. We know that her father is 5 times older than her. x times 5 is 5x, so her father is 5x years old. Since it is given that the sum of their ages is 78, we can put together this:

Nora's age + her father's age = 78 years

Substituting Nora's age for x and her father's age for 5x, we get this equation:

x + 5x = 78

x combined with 5x is equal to 6x, so:

6x = 78

If 6x is equal to 78, then 6x divided by 6 is equal to 78 divided by 6. This is done using the division property of equality.

6x/6 = 78/6

After calculating, we get this:

x = 13

x is Nora's age, so she is 13 years old. However, her father is 5 times older than her, and 13 times 5 is equal to 65. Nora's father is 65 years old.

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5