Question

some questions on chapter simple equations

Answer 1

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Answer 2

3)solution
Let a be the larger number
Let b be the smaller number

It is given that
a+b=90...........i
And
a/3 =a+2b..........ii
Equating i and ii
a/3=a+2b
Cross multiply
a= 27+6b
a-6b = 27.............iii

Subtracting iii from i

. a+b=90
.- a+6b=-27
__________
7b=63
b=9


Substituting the value of b in equation i
a+9=90
So a=90-9 = 81

Therefore,
Larger number is 81
Smaller number is 9


Thankyou

$5)1solution \\ let \: the \: number \: be \: x \\ according \: to \: question \\ \frac{5 + x}{12 + x} = \frac{2}{3} \\ cross \: mutiplying \\ 15 + 3x = 24 + 2x \\ 3x - 2x = 24 - 15 \\ x = 9 \\ \\ \\ \\ please \: mark \: me \: as \: the \: brainliest$