camirialchambers17
06.08.2019 •
Mathematics
The sum of three numbers is 98. if the ratio of the first to second is 2: 3 and that of the second to the third is 5: 8; then the second number is
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Ответ:
30
Step-by-step explanation:
Since the ratio between the first/ second number is 2 : 3
Let them be represented by
2x : 3x
The ratio between the second/ third numbers is 5 : 8, then
third number = × 3x = x = 4.8x
We have the 3 numbers in the ratio 2x : 3x : 4.8x
Sum the numbers and equate to 98
2x + 3x + 4.8x = 98
9.8x = 98 ( divide both sides by 9.8 )
x = 10
Hence the 3 numbers are
2x = 20, 3x = 30 and 4.8x = 48, that is
20, 30, 48 ← sum = 98
Thus the second number is 30
Ответ:
the first one is AT&T has faster internet speed than Bidmore and Comcast
the second one is bidmore, comcast and at&t