Three times a number is 20% more
than twice another number when
increased by 105. If twice the first number
increased by 36 is 20% less than three
times of the second number, then what
is the first number?
a. 150
b. 162
c. 180
d. 240
e. None of these.
Answer: Option b
ReplyDeleteExplanation:
Let the two numbers be x and y.
3x = 1.2( 2y +105)
3x = 2.4y +126 ………………..(1)
2x +36 = 0.8(3y)
2x +36 =2.4y ………………..(2)
x = 162