Question
A piggy bank holds 10-paise, 20-paise, and 50-paise
coins in the ratio of 17:19:8. If the total value of all the coins combined is Rs. 2280, determine the number of 20-paise coins in the piggy bank.Solution
Let number of 10-paise, 20-paise and 50-paise in the piggy bank is 17x, 19x and 8x respectively.
So, 17x/10 + 19x/5 + 8x/2 = 2280
Or, 1.7x + 3.8x + 4x = 2280
Or, 9.5x = 2280
Or, x = 240
So, number of 20-paise coins in the piggy bank = 240 × 19 = 4560
Given the following SQL query:
SELECT department _ id, COUNT(*) AS employee _ count
FROM employees
GROUP BY department_id
HA...
In Excel, you want to summarize sales data by region and product category, displaying the sum of sales for each combination. Which feature should you us...
Which of the following scenarios demonstrates an appropriate application of time series analysis?
Which ES6 feature allows for function parameters to have default values if no value is provided during a function call?
What is a key distinction between metadata and primary data in a database context?
In the context of metadata for data management, which of the following examples best illustrates descriptive metadata?
Which characteristic of cloud computing ensures resources can be scaled up or down based on user demand?
A company uses a firewall to filter incoming and outgoing network traffic. Despite this, an attacker successfully accesses the network through a vulnera...
Which data structure is used in Prim’s Algorithm to efficiently find the minimum edge connecting a vertex to the spanning tree?
Which of the following best describes the main difference between random and non-random sampling methods?
Relevant for Exams:
