Question

If 1 is subtracted from a number and the difference is
multiplied by 12 , the result is 7.
10. A number divided by 2 and then increased by 5 is 9.
11. The sum of twice a number and 4 is 18.
12. The age of Sohan Lal is four times that of his son Amit. If
the difference of their ages is 27 years, find the age of Amit.
13. A number exceeds the other number by 12. If their sum is
72, find the numbers.
14. Seven times a number is 12 less than thirteen times the
same number. Find the number.
15. The interest received by Karim is 30 more than that of
Ramesh. If the total interest received by them is 70, find the
interest received by Ramesh.
16. Subramaniam and Naidu donate some money in a Relief
Fund. The amount paid by Naidu is 125 more than that of
Subramaniam. If the total money paid by them is 975, find the
amount of money donated by Subramaniam.

Answer 1

11,2x+4=18

2x=14

X=7

So the two numbers are 7 and 4