1.

the mean of x, x +2, x +4,x +6,x +8 is 24, find XcansecureIlshe8.2in her next test, if she has to have a mean score oand 75 marks in four tests. What is the least number of marks10, The mean ot6l the mean of remaining numbers becomes

Answer»

73+86+78+75+x/5 = 80

x = 400 - 312

x = 88



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