Question

srishti has a total of Rs 780 as currency notes in the denominations of rupees 10,rupees 20 and rupees 50.the ratio of the number of rupees 50 notes and rupees 10 notes is 3:2. I'd she has a total of 32 notes,how many notes ofrom each denominstion she has

Answer 1

let srishti has x no. of 10 rs notes, y no. of 20 rs notes, z no. of 50 rs notes
as no. of notes of 50 and 10 is in ratio 3:2
so z:x = 3:2
now she had total of 32 notes
so x + y + z = 32.....@
and also total currency is 780
so
10x + 20y + 50z = 780
as z = (3/2)x
the equation becomes
10x + 20y + 75x = 780
85x + 20y = 780......#
from @
x + y + (3/2)x = 32
(5/2)x + y = 32
multiplying the equation by 20
50x + 20y = 640
subtracting it from #
35x = 140
x = 4
z = (3/2)4 = 6
4 + 6 + y = 32
y = 22
if you still have problem or any doubt you can ask me

Answer 2

Answer:

it's a correct answer

thank you