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Let the present age of 'P' and 'Q' be 'a' years and 'b' years respectively. So, a + 5 = b - 4 Or, b - a = 9 -------- (I) And, a - 6 + b - 6 = 27 Or, a + b = 39 ------- (II) On adding equation I and II, We get, b - a + a + b = 9 + 39 Or, 2b = 48 Or, 'b' = 24 On putting value of 'b' in equation I, We get, 24 - a = 9 Or, 'a' = 15 So, present age of 'R' = 15 + 3 = 18 years Therefore, age of 'R' 4 years hence from now = 18 + 4 = 22 years
A toy is sold for Rs. 800 at 60% profit when profit is calculated on selling price. Find the profit% on cost price?
If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”
250 × 10 ...
Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.
66 * 32 * 8...
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 “ A ” denotes “added to”, “ B ” denotes “divided by”, “ C ” denotes “multiplied by” and “ D ” denotes “subtracted from...
If x stands for ‘addition’, ÷ stands for ‘subtraction’, + stands for ‘multiplication’, and – stands for ‘division’, then 90 x 85 – ...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
128 * 4 * 12 * 3 * 8 = 20
Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.
54 * 2 * 4 ...
Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
5 * 14 * 6 * 8 * 9 * 502
If ‘P’ means ‘+’, V means ‘×’, T means ‘-‘ and ‘Q’ means “÷’ , then find the value of the expression given below:
30 P ...