(a) State four characteristics of igneous rocks. . (b) The table below illustrates the combined
AGRICULTURE
WAEC 2018
(a) Statefour characteristics of igneous rocks. .
(b) The table below illustrates the combined demand and supply schedule for maize.
Use it to answer the questions that follow.
Price (?) | Quantity of maize demanded (kg) | Quantity of maize supplied (kg) |
20 | 50 | 340 |
16 | 70 | 300 |
12 | 125 | 250 |
8 | 200 | 200 |
4 | 350 | 130 |
(i) Draw the demand and supply curves to show the equilibrium price of maize.
(ii) Determine the excess demand for maize at a unit price of ?4.
(iii) Determine the excess supply for maize at a unit price of ?12.
Explanation
(a) Charateristics of igneous rocks
- Formed from molten magma/volcanic eruption;
- Crystalline in nature;
- Resistant to weathering and erosion;
- Contains mainly primary minerals;
- Coarse or fine grained particles which is visible;
- Light or dark coloured;
- They are very hard.
(b) (i)Demand and supply curves for maize
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *