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### Best Answer MoltenHound says

2/5 * 1/4 * 3/7 * x = 15

6/140 * x = 15

3/70 * x = 15

3x = 15 * 70

3x = 1050

x = 1050/3

x = 350

Half of 350 = 175!! (Which is number 2, same as above!)

Took me a while to figure it out but I finally did :)

### Sakhi Deshmukh says

Answer is (2) 175

2/5 * 1/4 * 3/7 * x= 15

x=350

350/2=175

therefore answer is 175.

### ExpectGreatThings says

(2) 175.

3/7 of 350 is 150

1/4 of 150 is 37.5

2/5 of 37.5 is 15

1/2 of 350 is 175

Thanks for giving us options :)