Uma barra de chocolate é divida entre Kelly, Penha e Sônia. Sabendo que Kelly ganha (dois quintos) da barra, Penha ganha (um quarto) e Sônia ganha 70 gramas, determine o peso da barra em gramas.

Alguém poderia me explicar como resolver esse problema??

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation:

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation: