a number is 144 less than six times of the average of its 1/5th 1/4th and 1/12th find 2/9 of the number
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Step-by-step explanation:
let the number be x
then 1/5th, 1/12th and 1/4th of this number will be 1/5x, 1/4x and, 1/12x
average = 1/5x + 1/4x+ 1/12x ÷ 3= 32x/60 divided by 3= 32x/180
a/q = 6 X 32x/180 - 140 = x
=32x/30 = x + 140
= 32x/30 - x = 140
= 2x/30 = 140 = x = 30 X 140/2
= x = 2100
now 2/9 of the number = 2/9 X 2100 = 1400/3 ANS
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