Past papers › JAMB 1984 · UME › Question 8 Question JAMB General Maths 1984 Objective Statistics: data & averages Statistics: data & averages
The cost of production of an article is made up of labour ₦70, power ₦15, materials ₦30 and miscellaneous ₦5. Find the angle of the sector representing labour in a pie chart.
A 210 ∘ 210^\circ 21 0 ∘ B 105 ∘ 105^\circ 10 5 ∘ C 175 ∘ 175^\circ 17 5 ∘ D 150 ∘ 150^\circ 15 0 ∘ E 90 ∘ 90^\circ 9 0 ∘
Worked solution (try it first) Total cost: ₦70 + ₦15 + ₦30 + ₦5 = ₦120.
Labour's share of the circle is
70 120 × 360 ∘ \frac{70}{120} \times 360^\circ 120 70 × 36 0 ∘ .
That is
210 ∘ 210^\circ 21 0 ∘ , option A.
Watch out
Use the whole circle, 360 ∘ 360^\circ 36 0 ∘ 70 120 \frac{70}{120} 120 70 180 ∘ 180^\circ 18 0 ∘ 105 ∘ 105^\circ 10 5 ∘ Report a problem with this question