Answer:
61
Step-by-step explanation:
Since we now that avalanches occur at 245 mph and that is 4 times as fast as a skier. So we can divide 245/4 = 61.25 ≈61
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25
Step-by-step explanation
Let the ones's digit =x.
So, sum of the digits =7
Tens's digit =7−x
Original no. =10(7−x)+x=70−10x+x=70−9x
Reversed no. =10x+7−x=9x+7
2(orig no) = reversed no. −2
2(70−9x)=9x+7−2
140−18x=9x+5
27x=135
x=5
Ten's digit =7−5=2
No. =25
Answer:
6 and 8
Step-by-step explanation:
If you look at the list of multiples for each you will see that the lcm of 8 and 6 is 24.
total area = 3×7 + 3×10 + 12×5
= 21+ 30 + 60 = 111