For the following questions answer them individually
The longest side of the obtuse triangle is 7 cm and the other two sides of the triangle are 4 cm and 5 cm. Find the area of the triangle.
The following bar graph shows the marks of a student from 5 different subjects in 2018 and 2019. Find the ratio of total marks of 2018 to the total marks of 2019.
X alone can finish a work in 18 days. Y alone can finish the same work in 9 days. If X, Y and Z together can finish the same work in 4 days, then in how many days Z alone can finish the work?
The value of $$14 + \left[100Â \div \left\{60 \div\left( 18 \div6 \right)\right\}\right]$$ of 400 is:
A purchased two articles for Rs. 400 and Rs 600 respectively and sold at gains of 10% and 20% respectively.
What was his overall gain percentage?
In a field 8 workers complete a task in 22 days. If this task is to be completed in 44 days, then how many workers will be required?
The product of LCM and HCF of two numbers is 2028. If one number is 78, then what is the other number?
A sum of Rs. 7500 amounts to Rs. 15000 in two years at compound interest calculated annually. How much will Rs. 7500 becomes in four years?