This was 9 or 8 months ago and no one answered the question
Answer:
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Step-by-step explanation:
Answer:
The answer for this question is-4
Answer:
1. Math encourages curiosity and questions.
2. Math can save you money. ...
Answer:
9 km/h …. Current rate
12 km/h ….. still water boat rate
Step-by-step explanation:
The speed of the boat supposed to be x km/h
The current rate is y km/h
(x + Y) * 10 = 210
(x – y) * 70 = 210
x + y = 21 ….. ①
x –y = 3 ….. ②
①’- ②’ … 2y = 18
Y = 9 km/h …. Current rate
X = 9 + 3= 12 km/h ….. still water boat rate