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What number must subtracted from both the numerator and the denominator of the fraction 27/35 so that it becomes 2/3 ?
A]6
B]
8
C]
9
D]
11
Correct Answer :
11
Explanation :
Let the number be x. Then,
[27 - x]/[35 - x] = 2/3
3[27-x] = 2[35-x]
81 - 3x = 70 - 2x
81 - 70 =3x - 2x
x =11
So, Required number is 11.
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Which of the following is least number?
13/22
B]
15/24
C]
17/26
D]
19/28
Correct Answer :
13/ 22
Explanation :
Converting into decimal
13/22=>.59~ ,15/24=>.62~ , 17/26=>.65~ and 19/28=> .67~
there .59~ < .62~ < .65~ < .67~ ,So correct answer is 13/22
In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is
46, then find the dividend?
4236
B]
4306
C]
4336
D]
5336
Correct Answer :
5336
Explanation :
Dividend = [Divisor x Quotient] + Remainder
according the question
remainder=46
divisor = 5*remainder=5*46 = 230
divisor=10*quotient
quotient =230/10=>23
So dividend =[230*23]+46=5336
4.86¯ − 3.71¯ = ?
A]1.6¯
B]
1.5¯
C]
1.14¯
D]
1.15¯
Correct Answer :
1.15¯
Explanation :
4.86¯ − 3.71¯ =4+[86/99] − 3+[71/99] = [1+15/99] =1.15¯
0.004 × 0.5 = ?
A]2
B]
0.02
C]
0.002
D]
0.0002
Correct Answer :
0.002
Explanation :
0.004 × 0.5 = 0.002
3 * 0.3 * 0.03 * 0.003 * 30=?
A].0000243
B]
.000243
C]
.00243
D]
.0243
Correct Answer :
.00243
Explanation :
3 * 3 * 3 * 3 * 30 = 2430
Thus, 3 * 0.3 * 0.03 * 0.003 * 30 = 0.002430 [Six places of decimal ]
Express 0.5¯ as a vulgar fraction?
A]5/10
B]
5/12
C]
5/9
D]
5/6
Correct Answer :
5/9
Explanation :
0.5¯ =5/9
Which of the following is larger than 3/5?
A]1/2
B]
39/50
C]
59/100
D]
3/10
Correct Answer :
39/50
Explanation :
3/5 =>0.6
1/2 =>0.5
39/50 =>0.78
59/100 =>0.59
3/10=>0.3
0.3