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A and B have their monthly incomes in the ratio 8 : 5. While their monthly expenditures are in the ratio 5 : 3. If they have saved Rs 12,000 and Rs 10,000 monthly respectively, then the difference in their monthly income is
ABCD is a cyclic quadrilateral. AB and DC when produced meet at P, If PA = 8 cm, PB = 6 cm, PC = 4 cm, then the length (in cm) of PD is
In a school there were 1554 students and the ratio of the number of the boys and girls was 4 : 3. After few days, 30 girls joined the school but few boys left; as a result the ratio of the boys and girls became 7 : 6. The number of boys who left the school is
In an office, 40% of the staff is female. 70% of the female staff and 50% of the male staff are married. The percentage of the unmarried staff in the office is
In an examination average mark obtained by the girls of a class is 85 and the average mark obtained by the boys of the same class is 87. If the girls and boys are in the ratio 4 :5, average marks of the whole class (approx) is closest to
A man sells an article at 5% above its cost price. If he had bought it at 5% less than what he had paid for it and sold it at Rs 2 less, he would have gained 10%. The cost price of the article is
AB and CD are two parallel chords of a circle of lengths 10 cm and 4 cm respectively. If the chords are on the same side of the centre and the distance between them is 3 cm, then the diameter of the circle is
Let x be the least number, which when divided by 5, 6, 7 and 8 leaves a remainder 3 in each case but when divided by 9 leaves no remainder. The sum of digits of x is
Three science classes A, B and C take a Life Science test. The average score of class A is 83. The average score of class B is 76. The average score of class C is 85. The average score of class A and B is 79 and average score of class B and C is 81. Then the average score of classes A, B and C is
Two blends of a commodity costing Rs 35 and Rs 40 per kg respectively are mixed in the ratio 2 : 3 by weight. If one-fifth of the mixture is sold at Rs 46 per kg and the remaining at the rate of Rs 55 per kg, the profit percent is
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