Ratio of the length of the rope a to the length of rope b is 3:4. The ratii of length of rooe c to length of rope b is 7:6. If the length of the longest rope is 84 cm, then find the tital length of three ropes
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Step-by-step explanation:
a:b=3:4=>a=(3/4)b so b>a
c:b=7:6=>b=(6/7)c soc>b
so c=84cm
=>b=6/7*84=72cm
a=3/4*72=54cm
total length of all rope=210cm
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