Question

a piece of alloy contains brass and bronze mixed in the ratio 7:6 respectively. the alloy is melted in a furnance and 91g is taken out of it and replaced with 60g of bronze in alloy. forming the ratio as 3:4.find the initial quantity of alloy​?​

Answer 1

Answer:

169g

Step-by-step explanation:

by ratio method

Brass Bronze

7 : 6----1

91 kg alloy taken out

ratio will not change

than 60 kg of bronze is added so ratio of bronze will change but brass remain constant so

bew ratio 3 : 4

from 1

brass: bronze

7 : 6 ×3

3 : 4 ×7

21 : 18

21 : 28

18-28=10 so

10==== 60

1===6

13====78

78+91===169

so initial quantity is 169g