The diagram shows a field $$\(A B C D\)$$. The bearing of $$\(B\)$$ from $$\(A\)$$ is $$\(140^{\circ}\)$$. $$\(C\)$$ is due east of $$\(B\)$$ and $$\(D\)$$ is due north of $$\(C\)$$. $$\(A B=400 \mathrm{~m}, B C=350 \mathrm{~m}\)$$ and $$\(C D=450 \mathrm{~m}\)$$. Jono runs around the field from $$\(A\)$$ to $$\(B, B\)$$ to $$\(C, C\)$$ to $$\(D\)$$ and $$\(D\)$$ to $$\(A\)$$. He runs at a speed of $$\(3 \mathrm{~m} / \mathrm{s}\)$$. Calculate the total time Jono takes to run around the field. Give your answer in minutes and seconds, correct to the nearest second. .............. $$\(\min\)$$ .............. s

Mathematics
IGCSE&ALevel
CAIE
Exam No:0580_s20_qp_42 Year:2020 Question No:5(c)

Answer:

\(10 \min 8 \mathrm{~s}\)

Knowledge points:

E1.11.3 Calculate average speed. (Use ratio and scales in practical situations.)
E5.1 Use current units of mass, length, area, volume and capacity in practical situations and express quantities in terms of larger or smaller units. (Convert between units including units of area and volume.)

Solution:

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