Answer:2.7rs
Explanation:
First find the cost of one m:
We can set it up as a fraction in the form of cloth (mm)/cost(rs)
=
56m/10rs
let x be the cost in rs of 1m:
1m/x
This is kind of like a ratio where 56/56=1 so therefore 10/56 (because whatever you do to the top you do to the bottom) will give us x or in other words the cost of 1 meter of cloth:
so after dividing both 56 and 10 by 56 we get:
1/0.18 (it would be a longer decimal but always try to round it if you can!)
That mean 1m of cloth costs 0.18 rs
So now let’s apply the same rule as before (treating the fraction as a ratio and doing the same on both top and bottom and let’s apply it again to find the cost of 15 meters!)
1m * 15
————-
0.18 * 15
=
15m
———-
2.7rs
therefore the cost of 15 m is 2.7rs
confirm with your teacher wether they want you to round it or not however.
Hope this helps!
:D