Question

138. The sum of the ages of a mother and her
daughter is 50 years. Also 5 years ago, the
mother's age was 7 times the age of the daugh-
ter. The present age of the mother is:
a) 30 years
b) 35 years
c) 40 years
d) 45 years​

Answer 1

Answer:

option d 45years

Hope it's helpful

Step-by-step explanation:

The sum of the ages of a mother and her daughter is 60 years. After 15 years, the mother's age will be twice as that of her daughter's age at that time. What are their present ages?

Let present age of mother is x and daughter is y

So x+y= 60 equation no.1

Their age after 15 years

Mother = x+15

Daughter = y+15

According to question

x+15= 2( y+15)

x+15= 2y+ 30

x-15= 2y equation 2

Now substitutjng equation 1 and2

x-15= 2(60-x)

x-15= 120- 2x

3x= 135

x = 135/3

x= 45 years

Mother age is 45 years

Daughter age 60–45= 15 years

Answer 2

Answer:

hey mate ...

here is ur answer ....

c) 40

Step-by-step explanation:

Let , m=mother's age and d=daughter's age .

m + d = 50 (given)

m= −d + 5o

m−5=7(d−5)

m−5=7d−35

m=7d−30

7d − 30 = − d + 50

8d − 30 = 50

8d = 80

d = 10

As , m+10=50

So , m=40

Daughter's age is 10 and mother's age is 40 .

hope this will help uh ...

have a great day ahead ...

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