Question

sum of present ages of thahir and masuri is 18 years three years ago thahir was three times as old as mudassar find their present ages​

Answer 1

Answer:

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Step-by-step explanation:

T+M = 18; T = 18-M

T-3 = 3(M-3)

T-3 = 3M-9

18-M-3 = 3M-9

15-M = 3M-9

-4M = -24 divide both sides by -4, and remember -/- = +

M = 6

Now solve for T:

T-3 = 3*(6-3)

T-3 = 9

T = 12

------------------------

Check:

6+12 = 18 Correct

Note: You can also solve for T:

T+M = 18; T+6 = 18; T = 12

and then check by substituting in

T-3 = 3(M-3); 12-3 = 3(6-3); 9 = 9

Answer 2

Answer:

Masud = 6 years old    Tahir = 12 years old

Step-by-step explanation:

Present age:

Masud as x

Tahir as (18 - x)

3 years ago:

Masud as (x - 3)

Tahir as (18 - x) - 3

Tahir was three times as old as Masud:

⇒ (18 - x) - 3 = 3(x - 3)  

⇒ 15 - x = 3x - 9  

⇒ - x - 3x = - 9 + (- 15)  

⇒ - 4x = - 24  

⇒ x = 24/4  

⇒ x = 6

Masud = 6 years

Substitute:

⇒ (18 - x)

⇒ 18 - 6

⇒ 12

Tahir = 12 years old