a two-digit number is seven times the sum of its
A two-digit number is seven times the sum of its digits. The number formed by reversing the digits is 18 less than the original number. Find the original number.
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a 90 acid solution is mixed with a 97 acid solution to obtain 21 litres of a 95 solution findout the quantity of every solutions to get the resultant
six men and eight boys can finish a piece of work in 14 days while eight men and twelve boys can do it in 10 days find the time taken by 1man
a man travels 600km partly by train and partly by truck if he covers 120km by train and the rest by truck it takes him eight hours but if he
a motor boat takes six hours to cover 100 km downstream and 30 km upstream if the motor boat goes 75 km downstream and returns back to its
a two-digit number is seven times the sum of its digits the number formed by reversing the digits is 18 less than the original number find
consider 2 firms i12 producing quantities q1 and q2 respectively let the market price be given by pa-bq1q2 firm 13939s marginal cost c is common
5 years however a mans age will be 3times his sons age and 5 years ago he was 7 times as old as his son find their present
the students of a class are made to stand in complete rows if one student is more in each row there would be 2 rows less and if one student is less
a jeweler has bars of 18-carat gold and 12-carat gold how much of every melted together to obtain a bar of 16-carat gold weighing 120 gm it is given
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