79.98 / 12.51 * 2.49 = ______?
79.98 / 12.51 * 2.49 = ______?
A. 12
B. 14
C. 16
D. 18
Explanation:
80 / 12.5 * 2.5 = ?
=> ? = 6.4 * 2.5 = 16
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A dealer professing to sell at cost price uses a 900 gms weight for a kilogram. His gain percent is:________?
A dealer professing to sell at cost price uses a 900 gms weight for a kilogram. His gain percent is:________?A. 9
B. 10
C. 11
D. 11 1/9
Explanation:
Gain % = {Error/(True value – error) × 100} %
= (100/900 × 100)% = 11 1/9%Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is :___________?
Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is :___________?A. 6
B. 12
C. 18
D. None of these
Let the numbers be 3x, 4x and 6x.
Then, 3x x 4x x 6x = 1944 72×3 = 1944
x3 = 27 ,=> x = 3
∴ Largest number = 6x = 18,A group of people has provisions for 29 days for 24 men. If after 4 days 1/6 of them desert then food will last for?
A group of people has provisions for 29 days for 24 men. If after 4 days 1/6 of them desert then food will last for?A. 25 days
B. 28 days
C. 30 days
D. 32 daysA rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?
A rectangular field 30 m long and 20 m broad. How much deep it should be dug so that from the earth taken out, a platform can be formed which is 8 m long, 5.5 m broad and 1.5 m high where as the earth taken out is increase by 10/5?A. 12 cm
B. 10 cm
C. 18 cm
D. 24 cm
30 * 20 * x = (8 * 5.5 * 1.5)/2What is the difference between the C.I. on Rs. 5000 for 1 1/2 years at 4% per annum compounded yearly and half-yearly?
What is the difference between the C.I. on Rs. 5000 for 1 1/2 years at 4% per annum compounded yearly and half-yearly?A. Rs. 2.04
B. Rs. 3.06
C. Rs. 4.80
D. Rs. 8.30
Explanation:
C.I. when interest is compounded yearly
= [5000 * (1 + 4/100) * (1 + (1/2 * 4)/100]
= 5000 * 26/25 * 51/50 = Rs. 5304
C.I. when interest is compounded half-yearly
= [5000 * (1 + 2/100)2]
= (5000 * 51/50 * 51/50 * 51/50) = Rs. 5306.04 Difference = (5306.04 – 5304) = Rs. 2.04.A man invests a certain sum of money at 6% per annum simple interest and another sum at 7% per annum simple interest. His income from interest after 2 years was Rs. 354. One-forth of the first sum is equal to one-fifth of the second sum. The total sum invested was :
A man invests a certain sum of money at 6% per annum simple interest and another sum at 7% per annum simple interest. His income from interest after 2 years was Rs. 354. One-forth of the first sum is equal to one-fifth of the second sum. The total sum invested was :A. Rs.3100
B. Rs.2700
C. Rs.2200
D. Rs.1800
Let the man invests Rs.x at 6% and Rs.y at 7%
Simple Interest on Rs.x at 6% for 2 years + Simple Interest on Rs.y at 7% for 2 years = Rs.354
x×6×2/100+y×7×2/