It is given that x is 15% of y and y is 28% of z. If x = 1050, then find z - y.
Answer & explanation
Correct answer: option 3
x = \(\frac{15}{100}\)y & y = \(\frac{28}{100}\)z
x : y = 3 : 20 & y : z = 7 : 25
x : y : z = 21 : 140 : 500
According to question,
21R = 1050
1R = 50
Now, z - y = 500R - 140R = 360R
= 360 × 50
= 18000
The correct answer is Option (3) → 18000