meena went to a bank to with draw rs.2000. she asked the cashier to give her rs 50 and rs 100 notes only. meena got only 25 notes in all . find how many notes of rs 50 and rs 100 she received
Answers
Answered by
0
Step-by-step explanation:
x+y=25; 50x+100y=2000
on simplify
x+2y=40
subract
eqn1and2
-y=-15so y = 15
substitute this value in eqn 1 and x is 10
Answered by
2
Rs 50 notes = 10 and Rs 100 notes = 15
⠀ ⠀⠀ ⠀ ⠀⠀ ⠀
⠀ ⠀⠀ ⠀ ⠀⠀ ⠀
Let total Rs 50 notes = x
and total Rs 100 notes = y
∴ Total notes = x + y
But we are given total notes = 25
Now, Meena has total money =50x + 100y
But we are given total money =Rs 2000
⠀ ⠀⠀ ⠀ ⠀⠀ ⠀
On substraction of ① and ②,
(x+y) - (x+2y) = 25 - 40
x + y - x - 2y = - 15
- y = - 15
⠀
Now, by putting y in ①,
x+y=25
x + 15 = 25
x = 25 - 15
∴ Rs 50 notes, x = 10
and Rs 100 notes, y = 15
Similar questions