Quantitative Aptitude - Arithmetic Ability Questions

ax + 5y = 8 has slope of -4/3. What is the value of a?

Line segment AB is parallel to line segment CD. AD intersects BC in E. If lengths of AE, BC and ED are 12 cm, 12 cm and 18 cm respectively, what is the length of EC?

If 23x + 23y = 184, then what is the average of x and y?

A sum fetched a total simple interest of Rs.5,400 at the rate of 12.5 %/yr in 4 years. What is the sum (in Rs)?

The average of fruits offered in a temple in a week was 75. The average of fruits offered in six days excluding Tuesday was 72. How many fruits were offered on Tuesday?

The volume of a spherical balloon is increased by 700%. What is the percentage increase in its surface area?

Raman can do a work in 5 days, Jatin can do the same work in 7 days and Sachin can do the same work in 9 days. If they do the same work together and they are paid Rs 2860, then what is the share (in Rs) of Raman?

If a:b = 5:8, find the value of (6a -­ 5b)/(a + 2b).