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Find the length of the diagonal of a rectangle with length 12 cm and width 5 cm.
A13 cm
B14 cm
C15 cm
D17 cm
In a mixture of 60 liters, the ratio of milk to water is 2:1. How much water should be added to make the ratio 1:2?
A40 liters
B60 liters
C80 liters
D100 liters
If 15% of a number is 45, what is 40% of the same number?
A100
B120
C140
D160
A man buys a cycle for Rs. 1400 and sells it at a loss of 15%. What is the selling price?
ARs. 1160
BRs. 1190
CRs. 1200
DRs. 1220
What is the angle of elevation of the sun when the length of the shadow of a tree is equal to its height?
A30°
B45°
C60°
D90°
If (a + b) = 7 and ab = 12, what is the value of (a^2 + b^2)?
A25
B29
C37
D49
A train 150 meters long passes a telegraph post in 10 seconds. What is the speed of the train in km/h?
A48 km/h
B54 km/h
C60 km/h
D72 km/h
If a worker can complete 1/4 of a work in 5 days, how many days will he take to complete 3/4 of the work?
A12 days
B15 days
C18 days
D20 days
A car covers a distance of 480 km in 8 hours. If its speed is increased by 20 km/h, how much time will it take to cover the same distance?
A5 hours
B6 hours
C6.5 hours
D7 hours