Ramesh had 20 pencils, Sheelu had 50 pencils and Jamaal had 80 pencils. After 4 months, Ramesh used up 10 pencils, Sheelu used up 25 pencils and Jamaal used up 40 pencils. What fraction did each use up? Check if each has used up an equal fractionof her/his pencils

Ramesh had 20 pencils,Sheelu had 50 pencils and Jamaal had 80 pencils.After 4 months,Ramesh used up 10 pencils.Sheelu used up 25 pencils and Jamaal used up 40 penciuls.What fraction did each use up ?Check if each has used up an equal fraction of their pencils?

Raj had 1 dozen copies,Jyoti had 2 dozen copies,James had 2(1)/(3) dozen copies and Smriti had 2(2)/(3) dozen copies.After one month,Raj used up 3 copies,Jyoti used up (1)/(2) dozen copies James copies.What fraction did each have after one month? Check,if each has an equal fraction of copies.

Neelam had 15 pencils. She gave 7 to her friend. What fraction of the total pencil did she give?

Simi used up 750 millilitre paint out of a bucket which contained 5 litre of paint. What fraction of paint did Simi use ?

Let us consider Example 2 in Section 3.3, i.e., the cost of 2 pencils and 3 erasers is Rs 9 and the cost of 4 pencils and 6 erasers is Rs 18. Find the cost of each pencil and each eraser.

In an Art class, the teacher gives 3 pencils to each student and has 5 pencils left over. a. Find the rule for the number of pencils the teacher had at the beginning of the class. b. If the number of students in the class is 12, find the number of pencils the teacher had at the beginning of the class.

Let us consider Example 2 in Section 3.3, i.e., the cost of 2 pencils and 3 erasers is Rs 9 and the cost of 4 pencils and 6 erasers is Rs 18 . Find the cost of each pencil and each eraser.

Calculate the required ratios and write them using the least possible counting numbers, in these problems. Of two pencils, the shorter is of length 6 centimetres and the longer, 9 centimetres. What is the ratio of the lengths of the shorter and the longer pencils?