Question

Tomos is a skier. He completed a ski race in 2 minutes 6 second. The race was 525m in length. Tomos assumes that the average speed is the same for each race. Using this assumption,work out how Tomos should take to complete an 800m race (minutes and seconds)

Answer 1

Step-by-step explanation:

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t1 = 2 min 6 sec = 2×60 + 6 sec = 126

d1 = 525 m

d2 = 800 m

d2/t2=d1/t1

so, t2 = (d2×t1)/d1=(800×126)/525

= (32×25×6×21)/25×21=192 sec = 180/60 min + 12 sec = 3 min 12 sec