Rita has hundred Rupees note have 50 rupees note total sum of money she has is 7000 the ratio of 100 rupee note to 50 rupees note is 5: 4 how many note of each type does she have
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Let the number of 100 rupee note be 5a
Number of 50 rupee note = 4a
Total money = 7000
=> 5a × 100 + 4a × 50 = 7000
=> 500a+200a = 7000
=> 700a = 7000
=> a = 10
Number of 100 rupee note = 50
Number of 50 rupee note = 40. <-- ANSWER
Verification :-
Number of 100 rupee note = 50
Total value of 100 rupee notes = 5000
Number of 50 rupee note = 40
Total value of 50 rupee note = 50 × 40 = 2000
Total money = 5000 + 2000
= 7000
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