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# Tow lengths are in the ratio 7:8.If the first length is 273 m,what amount is the second length ?

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- PuzzlingLv 71 month ago
Let 7x be the first length

Let 8x be the second length

The first length is 273:

7x = 273

x = 273/7

x = 39

Now calculate the second length:

8x = 8(39) = 312

Answer:

312 m

P.S. If you want a shortcut, multiply 273 by 8/7.

- DavidLv 71 month ago
The 2nd length is 312 m because 273/312 is a ratio of 7/8 and (273+312)/15 = 39

So: 7*39 = 273 and 8*39 = 312

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