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snikergrace
08.04.2020 •
Mathematics
Please help me please
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Ответ:
Malcolm's maximum speed was 280 km/h and Ravi's maximum speed was 240 km/h.
Step-by-step explanation:
Step 1:
Assume Malcolm's maximum speed was x and Ravi's maximum speed was y.
The average of their maximum speeds was 260 km/h.
So![\frac{x+y}{2} = 260.](/tpl/images/0589/2573/bc416.png)
If their maximum speeds are doubled, Malcolm's maximum speed would be 80 km/h more than Ravi's.
So
Take this as equation 2.
Step 2:
If we divide equation 2 by 2, we get
Substituting equation 3 in equation 1, we get
So Malcolm's maximum speed was 280 km/h and Ravi's maximum speed was 240 km/h.
Ответ: