Question

the difference between two numbers is 7. six times the smaller plus the larger is 77. find the numbers​

Answer 1

Answer:

let the no. be x and y then x-y=7 ,x=7+y

6x+y=77

6(7+y)+y=77

42+6y+y=77

7y=77-42

7y=35

y=5

and

x=7+5

x=12

Answer 2

$\huge\underline\mathrm{SOLUTION:-}$

AnswEr:

$\large{\underline{\boxed{\mathfrak\blue{Two \: numbers = 10 \: \& \: 17 }}}}$

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Let the larger number be a & smaller number be b.

1st case:

⇒ a - b = 7

⇒ a = b + 7 .................(eq.1)

2nd case:

⇒ 6b + a = 77

Putting value of a from (eq.1):

$\sf {\: \: \: \: \:\: [\because a = b + 7]}$

⇒ 6b + b + 7 = 77

⇒ 7b + 7 = 77

⇒ 7b = 77 - 7

⇒ 7b = 70

⇒ b = 70/7

⇒ b = 10

$\therefore{\underline{\boxed{\rm{Smaller \: number = 10}}}}$

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Putting value of b in (eq.1):

⇒ a = 10 + 7

⇒ a = 17

$\therefore{\underline{\boxed{\rm{Larger \: number = 17}}}}$

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