Question

A mixture of paint is prepared by mixing 2 parts of red pigments with 5 parts of the base. Using the given information in the following table, find the values of a, b and c to get the required mixture of paint.

Parts of red pigment	2	4	b	6
Parts of base	5	a	12.5	c

Options

• a = 10, b = 10, c = 10

• a = 5, b = 2, c = 5

• a = 10, b = 5, c = 10

• a = 10, b = 5, c = 15

Answer 1

a = 10, b = 5, c = 15

Explanation:

Given 2 parts of red pigments is mixed with 5 parts of the base.

∴ `4/a = 2/5`

⇒ `a = (4 xx 5)/2`

⇒ `a = 20/2`

⇒ a = 10

∴ `b/12.5 = 2/5`

⇒ `b = 2/5 xx 12.5`

⇒ b = 5

∴ `6/c = 2/5`

⇒ `c = (6 xx 5)/2`

⇒ c = 3 × 5

⇒ c = 15