Answer:
7/500
Step-by-step explanation:
1/10*1/5*7/10
(7/12) of 840 attended the concert:
(7/12)*(840) = 490 students attended the Spring Concert.
(840 - 490) = 350 did not attend
(350/840) is the fraction of students who did not attend. This can be reduced to (35/84)
(350/840) = 0.4167 or 41.67% did not attend.
Answer: 8/50
simplified is 4/25
350
500*70%=350
