Question
If the numerator of a fraction is decreased by 20% and
the denominator of the same fraction is increased by 30%, then what fraction of the old is the new fraction ?Solution
Solution -let the fraction = x/y
Decrease by 20% in numerator and increase by 30% in denominator.
=(x×80/100)/(y×130/100)
=8x/13y
fraction of the old is the new fraction=(8x/13y) ×y/x
=8/13.
(60/15) × 25 + 15 2 – 18% of 200 = ? 2
60 = (? x 10 + 250)/5
What will come in the place of question mark (?) in the given expression?
? X 7 + (243)⁽²/⁵⁾ = 380 ÷ 2 + 71The value of 15 × 14 – 30 + (32 + 17) is:
What will come in the place of question mark (?) in the given expression?
9 (? + 12) = 3 (14 + 17 - 11)
(√1296 – 12) × 5 = ? + 40
32% of 450 + 60% of 150 = ? × 9
390/? = √256 + 3.5
?% of (√196) × 24 + 344 = 428
22% of 280 + 34% of 1080 × 5/12 =? + 16% of 460