Advertisements
Advertisements
प्रश्न
72% of 25 students are interested in mathematics. How many are not interested in mathematics?
Advertisements
उत्तर
It is given that 72% of 25 students are good in mathematics.
Therefore,
∴ Percentage of students who are not good in mathematics = (100 − 72)%
= 28%
∴ Number of students who are not good in mathematics = `28/100 xx 25`
= 7
Thus, 7 students are not good in mathematics.
संबंधित प्रश्न
If (p – x) : (q – x) be the duplicate ratio of p : q then show that : `1/p + 1/q = 1/x`.
Find the duplicate ratio of the following :
`3 sqrt (2"a") : 2 sqrt (3"a")`
If (x + 3) : (4x + 1) is the duplicate ratio of 3 : 5, find the value of x.
₹120 is to be divided between Hari and Gopi in the ratio 5 : 3. How much does each get?
Divide Rs 1400 among A. B and C in the ratio 2 : 3 : 5.
If a : b = 3 : 5, find (3a + 5b): (7a – 2b).
27 cm2 : 57 cm2 = 18 cm : 38 cm
Which ratio is larger 10 : 21 or 21 : 93?
If A : B = 7 : 5 and B : C = 7 : 5, then A : C is ______.
If the sub-duplicate ratio of 6x2 : 24y2 is ______.
