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Question

Answer

(a)
Felix :
20 s ——- 48
60 s ——- 144

Dylan :
15 s ——- 39
60 s ——- 156

(b)
156 – 144 = 12

Ans : (a) Dylan; (b) 12 more heartbeats/min.

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  Felix Dylan
Heartbeats 48 39
Time 20 s = 1/3 min 15 s = ¼ min
Heartbeats /min 48 ÷ 1/3 = 144 39 ÷ ¼ = 156

(a) Dylan had a faster heart rate

(b) Dylan’s heart rate is faster by 156 – 144 = 12 beats/min

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