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in a box there are more than 70 marbles .there are fewer than 100marbles .Rhe number is 7times the sum of the digits .How many marbles are in the box

Sagot :

get the sum of 100 and 70 then multiply the answer to 7 and the over all answer is 1190 marbles
there are 84 marble in the box..

if you add the digits.. 8+4= 12
the number, which is 84 is 7 times the sum which is 12

84÷12 = 7..