Question

if 3/5 of the certain length is 210m then 5/7 of length is​

Answer 1

Answer:

250 m

Step-by-step explanation:

Let the total length be x m.

$\therefore \: \frac{3}{5} \times x = 210 \\ x = 210 \times \frac{5}{3} \\ x = 70 \times 5 \\ x = 350 \: m \\ \\ \frac{5}{7} \times x = \frac{5}{7} \times 350 = 5 \times 50 = 250 \: m$

Answer 2

See the answer I have done it