Jane wants to buy a photocopier. the salesperson has the following information on three models. if all three are used, a specific job is completed in 50 minutes. if copier a operates for 20 minutes and copier b operates for 50 minutes, one-half of the job is completed. if copier b operates for 30 minutes and copier c operates for 80 minutes, three-fifths of the job is completed. which is the fastest copier, and how long does it take this copier to complete the entire job working alone?

there will be 35 boys in each team. : )

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.