3 men can do work in = 15 days 4 women can do work in = 20 days 5 boys can do work in = 25 days According to question First 3 days work = (3M + 2W) × 3 Next 3 days work = (2W + 5B) × 3 So total 6 days work = (3M + 4W + 5B) × 3 = (1/15+ 1/20+1/25)× 3 = (1/5+ 3/20+3/25) = (20 + 15 +12 )/100 = 47/100 Remaining work = 1- 47/100 = 53/100 1 day work for 3 men and 5 boys = 1/15+ 1/25 = (10 + 6)/150 = 16/150 So 3 men and 5 boys will take days to complete the remaining work = (53/100) × (150/16) = 4(31/32) days
Which two signs should be interchanged to make the given equation correct?
8 – 26 + 15 × 18 ÷ 6 = 220
Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.
82 * 28 * 7...
If in a certain code language ‘+’ represents ‘×’, ‘–’ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘–’....
If ‘L’ denotes ‘addition’, ‘M’ denotes ‘multiplication’, ‘N’ denotes ‘subtraction’, ‘P’ denotes ‘division’, then what w...
Which among the given operators should replace the “%” (in the same order) in the given expression below:
5 % 10 % 5 % 36 % 15 % 6
If ‘P’ means ‘+’, V means ‘×’, T means ‘-‘ and ‘Q’ means “÷’ , then find the value of the expression given below:
30 P ...
If x stands for ‘addition’, ÷ stands for ‘subtraction’, + stands for ‘multiplication’, and – stands for ‘division’, then 30 x 40 – ...
If ‘-‘ stands for division ‘+’ stands for subtraction ‘÷’ stands for multiplication ‘×’ stands for addition, then which one of the fol...
Which two signs need to be interchanged to make the following equation correct?
56 – 12 × 60 ÷ 12 + 30 = 92
By interchanging the given two numbers (not digits), which of the following equations will be correct?
24 and 9
I. 113 + 24 – 20 × 9 ÷...