Question
Find the ratio of the total males in Delhi and
Chandigarh together to the total number of females in the same cities together.Solution
Number of bank aspirants in Delhi = 11% of 24500 = 2695 Number of males = 40% of 2695= 1078 Number of females = 2695 – 1078= 1617 Number of bank aspirants in Chandigarh = 24500 × 21/100 = 5145 Number of males = 5145 × 1/5= 1029 Number of females = 5145 – 1029 = 4116 Therefore, Required ratio = (1078 + 1029) : (1617 + 4116) = 2107 : 5733 = 43 : 117
Find the value of ‘x’ in the given expression
(49/16)x × (64/343)x-1 = 4/7
If a3 — b3 = 602 and a— b = 2, then find the value of( a2 + b2)
If (x 2 = 6x – 9), then find the value of [x³ + (x⁴/9)][5 - x³]
- If (x - y) = 5, then find the value of (x³ - y³ - 15xy).
If √b + (1/√b) = 11, then find the value of b + (1/b).
If (r + s + t) = 12 and (rs + st + tr) = 60, then find the value of (r² + s² + t²).
If, ( a + b = 14 ) and ( a² + b² = 106 ), then find the value of (a³ + b³).
If (a + b) = 13 and ab = 18, find the value of (a² + b²).
If a – b – c = 0, then the value of (a2 + b2 + c2)/(b + ac) is:
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