Question

four numbers are in the ratio of 3 : 1 : 7 : 5 respectively. If the sum of these four numbers is 336. then what is

the sum of first and fourth number?​

Answer 1

Answer:

168 is the answer

Step-by-step explanation:

Given ,

the numbers are in the ratio 3:1:7:5 and the sum of 4 numbers is 336 ,

so, let us think in this way

let x be the common factor

Then,

3x + x + 7x + 5x = 336

16x = 336

so x = 21

the first number is 3x = 3×21 = 63

the fourth number is 5x = 5×21 = 105

63 + 105 = 168

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