Question

ans it plzzzzz.because I want it now ​

Answer 1

Hey Mate,

Your answer is in the attachment, kindly check it from there

MARK AS BRAINLIST

Answer 2

Answer:

$\huge \ \fcolorbox{aqua}{aqua}{hi \: bro}$

Step-by-step explanation:

$\ \fcolorbox{aqua}{aqua}{your \: answer \: is : }$

${ \red{let \: the \: speed \: of \: boat \: be \: xkmh}}$

${ \red{speed \: of \: water \: be \: ykmh}}$

${ \green{by \: given \: condition}} \\ \frac{30}{x - y} + \frac{44}{x + y} = 10 \\ \frac{40}{x - y} + \frac{55}{x - y} = 13$

${ \orange{let \: \frac{1}{x - y} \: be \: u \: and \: \frac{1}{x + y}be \: v }}$

$30u + 44v = 10 \: \: \: eq \: 1 \\ 40u + 55v = 13 \: \: \: eq \: 2$

$using \: cross \: multiplication \\ \: { \red{(u \: can \: use \: any \: method)}}$

$\frac{u}{(44)( - 13) - (55)( - 10)} = \frac{v}{ (- 10)(40) - ( - 13)(30)} = \frac{1}{(30)(55) - (40)(44)}$

$therefore \: \frac{u}{ - 22} = \frac{v}{ - 10} = \frac{1}{ - 110}$

$u = \frac{1}{5} \: v = \frac{1}{11}$

$therefore \: x + y = 11 \: eq \: 3 \\ x - y = 5 \: eq \: \: 4$

$2x = 16 \\ x = 8$

$2 y = 6 \\ y = 3$

${ \red{this \: is \: by \: adding \: eq3 \: and \: 4}}$

$\ \fcolorbox{aqua}{aqua}{hence \: speed \: of \: boat is \: 8kmh \: speed \: of \: water \: is \: 3 \: kmh}$

$\huge \ \fcolorbox{aqua}{aqua}{follow \: me}$