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29,x ,x +15,108 ഇവയുടെ ശരാശരി 73.5 ആണെങ്കിൽ x എത്ര?

A80

B73

C71

D61

Answer:

C. 71

Read Explanation:

29,x ,x +15,108 ഇവയുടെ ശരാശരി 73.5

(29+x+x+15+108)4=73.5\frac{(29 + x + x + 15 + 108)}{4} = 73.5

(2x+152)=73.5×4=294( 2x + 152) = 73.5 × 4 = 294

2x=294152=142 2x = 294 - 152 = 142

x=142/2=71 x = 142/2 = 71


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