The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number

Require number = 1240 x (25/100)
= 310

Here, a = 20%
Required percentage loss = [a / (100 + a)] x 100%
= [20/(100 + 20)] x 100%
= (20/120) x 100%
= 16²/₃%

Let quantity of alcohal = 1000 L
Quantity of alcohal after 1st process = 80% of 1000 L = 800 L
Quantity of alcohol after 2nd process = 80% of 800 L = 640 L
Quantity of alcohol after 3rd process = 80% of 640 L = 512 L
? Required percentage = (512/1000) x 100 = 51.2%

Let the total number of children be N.
Then, N x (20/100) x N = 720
? N²/5 = 720
? N² = 5 x 720 = 5 x 5 x 144
? N = ?5 x 5 x 144 = 60
Number of sweets received by each child = (20/100) x 60 = 12

Let total number of employee be 100.
? Number of men = 60% of 100 = 60
and number of women = 40% of 100 = 40
Number of men drawing more than ? 50000 = 40% of 60 = 24 men
Since, number of total employees drawing more than ? 50000 = 36% of 100 = 36
Number of women who more than ? 50000 = 36 - 24 = 12
Number of women who draw less than ? 50000 = 40 - 12 = 28
Percentage of women who draw less then ? 50000 per year = (28 x 100)/40 = 70%

Increase in percentage of longer pipe compared to shorter pipe
= [(70 - 30)/30] x 100%
= (40/30) x 100%
= 400/3 %

Given that, a = 15% and b = 10%
According to the formula,
Required profit = a + b + (ab/100) %
= 15 + 10 + (15 x 10)/100 %
= (25 + 1.5)%
= 26.5%
= 26.5%

Here, x = 25, y = 20 and z = 5
According to the formula,
Required percentage = [100 - (25 + 20 - 5)]%
= [100 - (45 - 5)]% = (100 - 40)% = 60%

Let the fraction be P/Q.
Then, (P + 2P)/ Q + 3/2Q = 9/35
? (3P/5Q) x 2 = 9/35
? P/Q = (9/35) x (5/6) = 3/14

Total marks obtained = [45 + 47 + 49 + 45 + 32] = 218
Maximum marks = 5 x 50 = 250
? overall percentage = (218/250) x 100% = 87.2%