1.Tea at Rs. 126 per kg and at Rs. 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2. If the mixture is worth Rs. 153 per kg, the price of the third variety per kg is : (2)
(1) Rs. 169.50/-
(2) Rs. 175.50/5
(3) Rs. 175/-
(4) Rs. 185/-
2. A student rides on bicycle at 8 km/hour and reaches his school 2.5 minutes late. The next day he increases his speed to 10 km/ hour and reaches school 5 minutes early. How far is the school from his house? (1)
(1) 5/8 km
(2) 8km
(3) 5 km
(4) 10 km
3. A and B can do a piece of work in 30 days while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work? (1)
(1) 18 days
(2) 24 days
(3) 30 days
(4) 36 days
4. The least number which when divided by 35, 45, 55 leaves the remainder 18, 28 and 33 respectively is ____ (4)
(1) 3482
(2) 2468
(3) 3265
(4) 3448
5. The volume of a solid hemisphere is numerically equal to its total surface area. Its radius is ____ (3)
(1) 3 units
(2) 1 1/2 units
(3) 4 1/2 units
(4) 9 units