Question

2) Rekha has some notes of denomination Rs 10 and some notes of denomination Rs: 20 which amounts to Rs. 190. If the number of notes are interchanged then the total amount is Rs.230. Find the number of notes. Activity: Let the number of notes of denomination of Rs. 10 be x. And number of notes of denomination of Rs.20 bey, :: 10 x no.of notes + 20 x no of notes = amout :: According to the first condition (I) :. According to the second condition. (IT) Adding equation (1) and (II) ... (111) Subtracting equacion (1) from equation (IT) (IV) Adding equation (III) and (IV) ..2x = X= Substituting x = in equation (III) O + y = 14 .: y = 14-D=D Number of notes of denomination Rs. 10 = x = and number of notes of denomination Rs. 20 = y = 0 DO​

Answer 1

Answer:

correct answer is 1000 note