Question
The number of students in a school is 3247. If the ratio
between boys to girls is (x+3) : (x+4), then find the value of x.Solution
Boys : Girls = (x + 3) : (x + 4) Total number of students = 3247 => x + 3 + x + 4 = 3247 => 2x + 7 = 3247 => 2x = 3240 => x = 1620
PAR falls in the range of wavelength of
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