rectangular tank is 9 metre into 4 metre water flows into it through a pipe whose cross section is 5 cm into 3 cm at the rate of 10 metre per second in how much time will the water be one metre deep
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Answer:
Step-by-step explanation:
2x-3y=-1 3x+5y=5
2x-3y=-1 en1 *5
3x+5y=5 en2 *3
10x-15y=-5 en3
6x+15y=15 en4
add en3 +en4
10x-15y=-5 en3
+ 6x+15y=15 en4
16x = -15
x 16-15 =1
x=1
put x= 1 in en 1
2x-3y=-1
2[1]-3y=-1
2-3y=-1
-3y=2-1=1
y=-3-1
y=4
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