85% of 140 test tubes
= 85% * 140
= 0.85 * 140
= 119 test tubes
140/0.85 = 164.7
85%
119119.
119
p x 85 = 119 p = 119 ÷ 85 = 1.4 = 140%
120/140 x 100 = 85.714285 recurring (that is, 85.714285714..) percent or 85 and five sevenths percent.
(77+83+89+86+x)/5=85 (335+x)/5=85 (335+x)=85*5 335+x=425 x=425-335 x=90 He must get 90% on his fifth test to average 85%.
1.6471
85 + 140 = 125
119119.
It is: 85/140 times 100/1 = 60.'714285'% recurring decimal '714285'
85 percent = 0.85