Question
A storeroom has only steel and copper rods in the ratio
8:7, respectively and the weight of each steel and each copper rod is in the ratio 3:7, respectively. If the total weight of all the rods in the storeroom is 219 kg, then what is the weight of one steel rod?Solution
Let the number of steel and copper rods in the storeroom be ‘8k’ and ‘7k’, respectively Let the weight of one steel rod and one copper rod be ‘3y’ kg and ‘7y’ kg, respectively According to the question, 8k × 3y + 7k × 7y = 219 Or, 24ky + 49ky = 219 Or, 73ky = 219 Or, ky = (219/73) = 3 But since we do not have information regarding the exact number of rods in the room, we cannot determine the exact weight of one steel rod.
In the question below, three sentences are given, each divided into four parts, which may or may not contain grammatical errors. From the options, choo...
In the following questions, each sentence is divided into four parts, which are labelled a, b, c, and d, one of these parts may contain an error. If th...
We raced hurriedly (1) up gravel (2) hillsides with stomach- churning (3) vertiginous views (4) all around.
...Each boy was given (a) / a toy as a parting gift, (b) / which made them happy. (c) / No error (d)
Read the given sentence to find out whether there are any grammatical/contextual errors in it. The errors, if any, will be in two of the phrases of the...
Find the appropriate answer.
Everyone knows that (1)/ the Earth revolves around the sun, (2)/ but there are still some people (3)/ who denies it. (4)
The postman travelled by the cycle, often wading through (1)/ swamps or passed through jungles (2)/in order to reach the villages (3)/ No error (4)
They also lay claim to being the only brothers to finish first and second in the same race.
If we evince a little interest and involvement in our neighbourhood, we will discover a exciting world.
Relevant for Exams:
