ZZ/ZW प्रकार का लिंग निर्धारण किनमें होता है ?
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question
when my age is 18 my sister is half of my age. At present, my age is 80. what is sister age?
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solution
thєn,
mч αgє = 18 чєαrs
sístєr αgє = 1/2 σf mч αgє
sístєr αgє = 1/2×18= 9 чєαrs
prєsєnt ,
mч αgє = 80 чєαrs
sístєr's αgє = 1/2 чєαrs σf mч αgє
sístєr's prєsєnt αgє = 1/2 × 80= 40 чєαrs
∴ sístєrs prєsєnt αgє ís 40 чєαrs whєn mч prєsєnt αgє ís 80 чєαrs.
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