If it takes 12 people 3 days to build 72 meters of fence, how many meters of fence can 15 people build in one day?

30m

Step-by-step explanation:

First, i would calculate how much can 1 person build in a day:

If it takes 12 people 3 days to build a 72m, it would take (12x3) people to build 72m in 1 day

Or 36 people.

Then 1 person can build 72/36 meters of fence each day

Or 2 meters, so 15 people can build 30m of fence  )15x2)

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.