the question is share 171 in the ratio 3:7:9?

1st part = 171 × [3/(3 + 7 + 9)] = 27
2nd part = 171 × [7/(3 + 7 + 9)] = 63
3rd part = 171 × [9/(3 + 7 + 9)] = 81

You are being asked to divide the total amount into parts 3/19, 7/19 and 9/19

divide 171/19 to get 1/19th and then multiply up accordingly.

27, 63 and 81

27:63:81.

27, 63, and 81.

They are (3*9) = 27, (7*9) = 63 and (9*9) = 81 respectively which all add up to 171

The trick with ratios is to add them together to find the number of parts:

3 + 7 + 9 = 19

1 part of 171= 1/19 of 171 = 171/19 = 9

3 parts = 9 x 3 = 27
7 parts = 9 x 7 = 63
9 parts = 9 x 9 = 81

Check total = 171

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