One year ago, ratio of harry and peter age’s was 5 : 6 respectively. after 4 years, this ratio becomes 6 : 7. how old is peter
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let ages of harry and peter be a yrs and b yrs respectively.
1 yr ago it had been : harry = a-1 yrs
: peter = b-1
Ratio = a-1/b-1 = 5/6 ⇒ 6a - 6 = 5b - 5 ⇒ 6a - 5b = 1 ............(1)
after 4 yrs it wuold have been : harry = a+4
: peter = b+4
ratio = a+4/b+4 = 6/7 ⇒ 7a + 28 = 6b + 24⇒ 6b - 7a = 4 ....(2)
solving (1) and (2)
a= 26 b = 31
Harry present age's 26 yrs
Peter present age 's 31 years
1 yr ago it had been : harry = a-1 yrs
: peter = b-1
Ratio = a-1/b-1 = 5/6 ⇒ 6a - 6 = 5b - 5 ⇒ 6a - 5b = 1 ............(1)
after 4 yrs it wuold have been : harry = a+4
: peter = b+4
ratio = a+4/b+4 = 6/7 ⇒ 7a + 28 = 6b + 24⇒ 6b - 7a = 4 ....(2)
solving (1) and (2)
a= 26 b = 31
Harry present age's 26 yrs
Peter present age 's 31 years
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