A shopkeeper bought 240 ton rice. He sold 4/5th is at 37.5% profit, then find at what percentage profit or loss he should sell remaining rice, so as to gain 25% on the whole transaction? 

The length & breadth of a rectangle is in ratio 4 : 7. If perimeter is 88 cm. find area of rectangle.

A bag contains rupee, 50 - paise and 25 - paise coins in the ratio 2 : 3 : 4. If the total amount in the bag is Rs . 45, find the number of 50 - paise coins. 

9⁶-11 when divided by 8 would leave a remainder of :

Given that (a²+b²)=60, then find the value of (a+b)²+(a–b)².

A merchant has 1000 kg sugar, some part of which he sells at 8 % profit and the rest at 18 % profit. He gains 14 % on the whole. The quantity sold at 8 % profit is: 

A started a business with a capital of Rs.1,12,000. After 2 months, B joined the business with a capital of Rs.80,000 and after another 2 months, C joined the business with a capital of Rs.72,000. After 10 months from the start of the business, B withdrew Rs.8,000 and C also with drew Rs.8,000. If B received Rs.9,800 as his share in the profit at the end of a year, then the total profit was:

Find the minimum value of $$ {25 cosec^{2}θ +25sin^{2}θ}$$