The four numbers differ by 180 in turn, and their ratio is 1:3:5:7. What is the sum of the four numbers______ ．

The four numbers differ by 180 in turn, and their ratio is 1:3:5:7. What is the sum of the four numbers______ ．

1 + 3 + 5 + 7 = 16180 ÷ (716-516) = 110

Eight times a number is two out of seven. What's four out of three?

Yes
2/7÷8x4/3
=1/28x4/3
=1/21
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280 is 80 less than 5 times of a number. Find the number

Let this number be x, 5x-80 = 280, & nbsp; & nbsp; 5x = 280 + 80, & nbsp; & nbsp; & nbsp; X = 72. A: this number is 72

180-80+80-80+3-3

100