exam Maths Puzzle Numerical Ability

7(3-x)+1=5x-2
21-7x+1=5x-2
24=12x
24/12=2
12x/12=x
x=2

Read Solution (Total 0)

exam Other Question

In the Senior Class, one-fifth of the students are enrolled in mathematics. Find the number of students in the senior class if 87 are enrolled in mathematics. Bob invested $20,000, part at 14% and part at 13%. If the total interest at the end of the year is $2,720, how much did he invest at 14%?

Please help me on this