Question
A group of 24 men is capable of finishing a task in 15
days. Initially, 12 men begin the job and work on it for 12 days. After this period, an additional 'x' number of men join them, enabling the team to complete the remaining portion of the task in another 12 days. Assuming all men work at the same rate, determine the number 'x' of additional men that joined the work.Solution
According to the question, Total work = 24 Γ 15 = 360 units Amount of work completed by 12 men in 12 days = 12 Γ 12 = 144 units Amount of work to be completed by (12 + x) men = 360 β 144 = 216 units Therefore, (12 + x) Γ 12 = 216 Or, 12 + x = 18 Or, x = 6 Hence, option d.
If the signs '+' and ' Γ· 'and the numbers '2' and '4' are interchanged, which one of the following four equations would be correct?
Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
3 * 12 * 4 * 5 * 4...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
425 * 250 * 200 * ...
If βΓ·β means β-β, β-β mean β+β, β+β means βΓβ and βΓβ means βΓ·β, compute the value of the expression:
130 Γ ...
If '+' means 'subtraction', ' X ' means 'addition', '-' means 'division' and 'Γ·' means 'multiplication', then what is the value of the following expres...
If the following interchanges are made in signs, then what would be the value of the following expression?
48 X 63 + 2 Γ· 9 - 35Β
Interch...
Statements:
B β₯ K β€ C; Q > K > X; M = Q < P
Conclusions:
I. P > X
II. C β₯ M
Select the correct combination of mathematical signs that can sequentially replace β*β sign and balance the equation given below.
42 * 18 ...
After interchanging the given two signs and two numbers, what will be the value of the following expression?
Γ· and +; 6 and 25
8 Γ· 42 + ...
If '@' means ( X ), '$' means (-), '#' means (Γ·), and '%' means (+), then what is the value of the expression: [{(84 $ 20) # (14 % 18)} @ 12]