Question

A sum of rs 1000 is in the form of denomination of rs10 and 50rs.if the total number of notes is 60, find the number of notes of each type.

Answer 1

total sum= rs.1000

number of notes= 60

let number of rs.10 notes be x and number of rs.50 notes be y

∴x+y=60

∴x=60-y ...eq.1

and 10x+50y=1000 ....eq.2

substituting eq.1 in eq.2 :

10(60-y) + 50y =1000

600-10y+50y=1000

40y=1000-600

40y=400

y=10

x=60-y

x=50

ans. number of:

10 rupee notes is 50 and 50 rupee notes is 10

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Answer 2

Answer:

total sum= rs.1000

number of notes= 60

let number of rs.10 notes be x and number of rs.50 notes be y

∴x+y=60

∴x=60-y ...eq.1

and 10x+50y=1000 ....eq.2

substituting eq.1 in eq.2 :

10(60-y) + 50y =1000

600-10y+50y=1000

40y=1000-600

40y=400

y=10

x=60-y

x=50

ans. number of:

10 rupee notes is 50 and 50 rupee notes is 10

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Step-by-step explanation: