a) No, as the water leaked out from the crack is very little.
b) Vol of water = 10500cm3 Vol of water leaked out = 45ml+25ml=70ml =70cm3 70cm3x20=1400cm3 area of base = 35x10=350cm2 10500cm3-1400cm3=9100cm3 Height of water left = 9100cm3/350cm3=26cm
A rectangular tank 40cm by 20cm by 20cm contained some water. The ratio of the height of the water to the height of the tank was 2:5. All the water was drained out by a tap in 5 minutes. What was the rate of flow of water?
Machine A and machine B made pineapple tarts at a rate of 120 tarts per minute and 90 tarts per minute respectively. After 3/4h, machine A was stopped until machine B made the same number of tarts as machine A. Machine A was then started again. a) How long was machine A stopped? b) How many more tarts could be made if machine A was not stopped?
20 comments:
a)yes
b)i dunno
ANS: 9100
a)no
25ml=25cm3
45ml=45cm3
25cm3+45cm3=70cm3/min
70cm3X20=1400cm3
35cmX10cmX30cm=10500cm3
10500cm3-1400cm3=9100cm3
b)9100cm3
350x30=10500ml
25+45=70ml
70x20=1400ml
10500-1400=9100ml
35x10=350ml
9100/350=26cm
25+45=70ml
70x20=1400ml
35x10=350ml
1400x350=4cm
25+45=70ml
70x20=1400ml
35x10=350ml
1400x350=4cm
25+45=70ml(rate per min)
70x20=1400ml(drained in 20min)
35x10=350ml(base)
1400/350=4cm(height decreased)
30cm-4cm=26cm(remain height)
a) No, as the water leaked out from the crack is very little.
b) Vol of water = 10500cm3
Vol of water leaked out = 45ml+25ml=70ml
=70cm3
70cm3x20=1400cm3
area of base = 35x10=350cm2
10500cm3-1400cm3=9100cm3
Height of water left = 9100cm3/350cm3=26cm
A rectangular tank 40cm by 20cm by 20cm contained some water. The ratio of the height of the water to the height of the tank was 2:5. All the water was drained out by a tap in 5 minutes. What was the rate of flow of water?
350x30=10500ml
25+45=70ml
70x20=1400ml
10500-1400=9100ml
35x10=350ml
9100/350=26cm
Machine A and machine B made pineapple tarts at a rate of 120 tarts per minute and 90 tarts per minute respectively. After 3/4h, machine A was stopped until machine B made the same number of tarts as machine A. Machine A was then started again.
a) How long was machine A stopped?
b) How many more tarts could be made if machine A was not stopped?
26 is the NEW HEIGHT w0rhhx.
26 is the answer.
a)no....
b)26cm..
Method:
1st : add the total leakage from both cracks per min.
2nd : find the volume of water in the tank .
3rd : then take leakage times 20 (because of the 20mins)
4th : Vol of water - amount leaked out in 20mins = Square(i named it)
5th : take square devide by BASE AREA of the tank
6th : ANSWER~
===============steps===============
45+25=70cm3
35x10x30=10500cm3
70x20=1400cm3
10500-1400=9100cm3
35x10=350cm2
9100/350=26cm
A)Is A No!
B)25+45=70
70x20=1400
35x10x30=10500
10500-1400=9100
9100/350=26cm
A)Is A No~! =p
B)25+45=70
70x20=1400
35x10x30=10500
10500-1400=9100
9100/350=26cm
heyhey.justt dr0pping by.
BTW wh0 is LAINIE?
2h 30mins for question 1
1350tart are made if machine A had not stop question 2
(laine)
6400/5=1280ml per min
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( audition freak)
Sorry Jill, Question A for the machine and the tarts is 15 mins. Question B is 1800 tarts.
a)3/4x60=45 mins
120x45=5400
90x45=4050
5400-4050=1350
1350/90=15 mins
b) 120x15=1800 tarts
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