JAMB - Agricultural Science (2019 - No. 65)
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
2.47kg
4.69kg
7.35kg
12.3kg
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 |
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