Correct Answer: Option D

Explanation

Let C n G = X
n C only = 40 - x
n G only = 30 - x
40 - X + 30 - X + X  = 50
70 - X = 50
X = 70 - 50
X = 20

There is an explanation video available below.

• Itemise and explain six problem of distribution of commodities in West Africa? Answer this

  0 Answers   ·   11 minutes ago
• how many grams of Hydrogen gas will be produced when 6 grams of magnesium ribbon dissolves in 500cm³ of 6M... Answer this

  1 Answers   ·   Chemistry   ·   3 weeks ago
• If 1 litre of 2.2M sulphuric acid is poured into a bucket containing 10 litres of water, and the resulting... Answer this

  1 Answers   ·   Chemistry   ·   3 weeks ago