Question

A bag contains only black and blue coloured stones. If the number of stones in the given is in the ratio 3:7,then find the percentage of black coloured stones in the bag.

Answer 1

Step-by-step explanation:

answer right or wrong write on comment box

Answer 2

Answer:

no of stones in the ratio= 3:7

black coloured stones =3

-----‐---------------------------- -----

blue coloured stones 7

total coloured stones =3+7=10

% of black coloured stones =3 x100

-----

10

=30%

% of blue coloured stones = 7 x100

---

10

=70%