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Let the present ages of the two persons be x and y. Then, we are given: x + y = 60 (Equation 1) In 5 years, their ages will be x + 5 and y + 5. We are also given that the ratio of their ages in 5 years is 4:5, so: (x + 5)/(y + 5) = 4/5 Cross multiply to get: 5(x + 5) = 4(y + 5) 5x + 25 = 4y + 20 5x - 4y = -5 (Equation 2) Now, solve the system of equations: From Equation 1: y = 60 - x Substitute into Equation 2: 5x - 4(60 - x) = -5 5x - 240 + 4x = -5 9x = 235 x = 235/9 ≈ 26.11 (rounded) So, x ≈ 26 years, and y ≈ 34 years (since x + y = 60). Thus, the ages are approximately 26 and 34 years. Correct Option: a) 26 years and 34 years
If 65 + 54 = 2, 71 + 62 = 10, then 73 + 83 = ?
Select the correct combination of mathematical signs that can sequentially replace the * Signs and balance the given equation.
102 * 3 * 6 * 5 * 12 = 16
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
168 * 8 * 7 * 34 * 94 = 256
A shopkeeper sells rice in such a way that the selling price of 950 gm is the same as the cost price of one kilogram. Find his gain percent.
If ‘–‘ means ‘addition’, ‘+’ means ‘subtraction’, ‘÷ ‘ means ‘multiplication‘ and ‘×’ means ‘division’ , then find t...
If 'A' means ' X ', 'B' means '÷', 'C' means '+' and 'D' means ' - ', then what will come in the place of '?' in the given expression?
200 B 8 C...
If '+' means 'division', '-' means 'multiplication', '÷' means 'addition' and ' X ' means 'subtraction', then what is the value of the following expres...
If x stands for ‘addition’, ÷ stands for ‘subtraction’, + stands for ‘multiplication’, and – stands for ‘division’, then 80 x 54 –...
If 'A @ B' means 'A + B', 'A * B' means 'A X B', 'A %B' means 'A - B' and 'A & B' means 'A ÷ B', then what is the value of the expression ‘45 * 63 & ...
If the following interchanges are made in signs, then what would be the value of the following expression?
48 X 63 + 2 ÷ 9 - 35
Interch...