332 – 172 = 25k

=> (33 + 17 ) (33 - 17) = 25k

=> 50*16 = 25k

=> k = 50*16/25 =32

(z + x)/2 = 35

z + x = 70 .................... (1)

And,

(x + y)/2 = 25

x + y = 50 ................. (2)

(1) - (2), we get,

z - y = 70 -50 = 20

in 30 minutes, Rakib can complete 1 task

in 1 minute, Rakib can complete 1/30 task

Again,

in 20 minutes, Rakib and Monin can complete 1 task

in 1 minute, Rakib and Monin can complete 1/20 task

Now,

let, monin does x task in 1 minute.

Now,

1/30 + 1/x = 1/20

(x + 30)/30x = 1/20

30x = 20x + 600

30x - 20x = 600

10x = 600

x = 60

Thus,

momin working alone can complete the task in 60 minutes.

15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90 => 16 Numbers

And amount of numbers from11 to 90 = (90 - 11) +1 = 79 + 1 = 80

Percentage of numbers = 16*100/80 = 20%

Lopa = x

Shaquib = 2x

Hamed = 2x + 7

Now,

A/Q,

2x + 7 - x = 15

x + 7 = 15

x = 15 - 7

x = 8

2x = 2*8 = 16

1+ 36 = 37

2 + 18 = 20

3 + 12 =15

4 + 9 = 13

6 + 6 = 12

If sum were 75 the integers would be 24, 25 and 26 so the next lowest sum would be 23 + 24 + 25 ie 72.

The answer is thus 23.

12 gallon tub,with 3 gallons of water in the tub: needs {{{9Gal}}} to fill water in at 3 gal/min, and out at a rate of 1.5 gal/min: Net in at {{{1.5gal/min}}}  {{{9gal/1.5 (gal/min)}}} = 6 min

A man rowed 3 miles upstream in 90 minutes Let r represent the rowing r D = rt OR r = D/t (r-2) = 3/1.5 = 2   r-2 = 2   r = 4mi/hr With the current, will travel 6mi/hr {{{ 3mi/6(mi/hr) = .5hr}}} or 30min

Since 4y - 3x = 5

=>4y = 5 + 3x

=>4y - 5 = 3x

=>3x = 4y - 5

if you look at the equation you will notice that x is directly proportional to  y

therefore if we increase the value of y, x is also increases.

If the value of y is smallest then the x is also smallest.

Since y>100

therefore the smallest value of y = 101

therefore the equation is  3x = 4 X 101 - 5

=> 3x = 404 -5

=> x = 399/3

=> x = 133

-22√x +2

=> -22√4 +2

=> -22*2 +2

=> -24 +2

=> -16 + 2 [Notice that the –ve symbol before( 22√x ) is not inclusive with the number  by brackets, thus it won’t count when square rooting ]

=> -14

x=# of boys in the class y=# of students that speak French

Therefore we are looking for y / (total number in class). But the total number in the class is boys plus girls, so x + 3/4x=7/4x The 3/4 is because they told us there are 3/4 as many girls as boys. So now

y / (total number in class) = y / (7/4x)

Now we know that the number of students that speak French are: 1/2 boys +2/3 girls or 1/2x + 2/3(3/4x) = y = 1/2x + 6/12x = x Therefore y / (7/4x) = x / (7/4)x = 4/7

So the curve ball here is that the number that speak French just happens to be equal to the number of boys in the class, and boys make up 4/7 of the class as well.

(50 - 10)% = 40% means 8 gallons of fuel

1% means 8/40 gallons of fuel

100% means 8*100/40 gallons of fuel

                   = 20 gallons of fuel

LCM of 16,24 = 48 48*48 is the minimum size of square made with 16 by 24 tiles

Number of tiles required = area of square/area of one tile =48*48/(16*24) = 6 tiles

MPG files are video files in MPEG format, a multi media format standardized by the Moving Picture Experts group (MPEG). There are multiple MPEG formats: MPEG-1, MPEG-2 and MPEG-4.