Mr.Kapur withdrew rs.25000 from an ATM.If he received 150 notes in denominations of rs.500 and rs.100,find the no. of notes of each denomination?
although i know how to do it, but it is a 2 variable method...can u suggest a 1 variable method?
let the number 500 rs notes be x
and number of 100rs notes be (150-x)
according to the condition
25000 = x(500) + (150 - x)(100)
25000 = 500x + 15000 - 100x
25000 = 500x - 100x +15000
25000 -15000 = 400x
10000 = 400x
number of 500 rs notes = x=25 notes
number of 100rs notes = 150 - x=150-25 = 125 notes