If a crop requires 1.5kg phosphorus per hectare, how many kg of manure will be required per hectare is 1kg manure contains 0.32kg of phosphorus

A. 2.47kg?
B. 4.69kg
C. 7.35kg
D. 12.3kg

Correct Answer: Option B

B. 4.69kg

Explanation

If 1kg manure = 0.32kg of phosphorus
xkg manure = 1.5kg of phosphorus
(Cross multiply)

x = 1.5/0.32
= 4.69kg of manure