Question
A student was supposed to multiply a number by 0.84 but
instead multiplied it by 8.4. Due to this, his result exceeded the correct result by 3360. Find the original number.Solution
ATQ,
Let original number be ‘x’
So, 8.4x – 0.84x = 3360
Or, 7.56x = 3360
Or, x = 444.44 or approx. 444
More No. System Questions
√256 * 3 – 15% of 300 + ? = 150% of 160
What value should come in the place of (?) in the following questions.
336 ÷ 6 ÷ √16 * ? = 1400 ÷ 4
52% of 400 + √(?) = 60% of 600 - 25% of 400
30 of 20 - 40 + 182 - 23 × ? = 83
60 = (? x 10 + 250)/5
25% of 300 + √(?) = 35% of 600 - 15% of 300
x= √(4 × ∛(16 × √(4 × ∛(16 ×…… ∝)) ) )
32% of 4080 + 24% of 455 = x% of 4000
(47.5 ÷ 9.5) × (78.5 ÷ 15.7) + 475 = ? + 15% of 150
