A and B undertake a piece of work for ₹ 250/-. A alone can do that work in 5 days and B alone can do that work in 15 days. With the help of C, they finish the work in 3 days. If everyone gets paid in proportion to work done by them, the amount C will get is:
₹ 50/-
₹ 100/-
₹ 150/-
₹ 150/-
Dealer purchased an article for ₹ 900/- and fixes the list price in such a way that he gains 20% after allowing 10% discount, then the list price is
₹ 1,180/-
₹ 1,080/-
₹ 1,200/-
₹ 1,200/-
Cost price of 28 articles is equal to Sale price of 21 articles, then percentage of profit is
12%
20%
20%
In the last financial year, a car company sold 41800 cars. In this year, the target is to sell 51300 cars. By what percent must the sale be increased?
If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is
2 hours
3 hours
4 hours
4 hours
If a sum of money double itself in 8 years, then the interest rate in percentage is
10%
If (x - 5)2 + (y - 2)2 + (z - 9)2 = 0, then value of (x + y - z) is
16
-1
-2
-2
C.
-2
(x - 5)2 + (y - 2)2 + (z - 9)2 = 0
⟹ (x - 5)2 = 0
x - 5 = 0, x = 5
Similarly,
y = 2, z = 9
∴ x + y - z
= (5 + 2 - 9) = 7 - 9 = -2
Points P, Q and R are on a circle such that ∠PQR = 40° and ∠QRP = 60°. Then the subtended angle by arc QR at the centre is:
80°
120°
140°
160°