x is 20% more than z and y is 80% more than z. Find x:y?
- 2:3
- 3:4
- 1:3
- 1:4
Explanation
Since x is 20% more than z, we have:
x = z + (20% of z)
= 100 + (20/100) × 100
= 100 + 20
= 120
Since y is 80% more than z, we have:
y = z + (80% of z)
= 100 + (80/100) × 100
= 100 + 80
= 180
Now, we need to find the ratio x:y. We can simplify this by dividing both numbers by their greatest common divisor (GCD), which is 20.
x = 120 ÷ 20 = 6
y = 180 ÷ 20 = 9
So, the ratio x:y is 6:9. We can further simplify this by dividing both numbers by their GCD, which is 3.
x = 6 ÷ 3 = 2
y = 9 ÷ 3 = 3
Therefore, the ratio x:y is 2:3.
Related MCQs
- 25%
- 30%
- 35%
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
ایک طالب علم معیاری ٹیسٹ میں 84 ویں فیصد پر ہے۔ اس کا سب سے زیادہ قابل دفاع مطلب کیا ہے؟
- About 84% of the reference group scored no higher
- The learner answered exactly 84% of the items correctly
- The learner's raw score is 84 points above the mean
- Exactly 84% of all test items were easier for the learner
اس سوال کو وضاحت کے ساتھ پڑھیں
