Question

Dev found 15 black diamonds and 27 white diamonds in a chest. The ratio of black diamonds to white diamonds is

• A. 5:9
• B. 4:8
• C. 3:7
• D. 6:5

Answer 1

The correct option is A 5:9

Number of black diamonds = $15$

Number of white diamonds = $27$

Ratio of black diamonds to white diamonds = $15:27$

If we observe the numbers carefully, both $15$ and $27$ are divisible by 3.
So, divide the ratio to the lowest form.

$\frac{15}{27}=\frac{5}{9}$

Hence, ratio of black diamonds to white diamonds = $3:9$.