MEDIUM
7th ICSE
IMPORTANT
Earn 100

A motorboat goes downstream in a river and covers the distance between two coastal towns in five hours. It covers this distance upstream in six hours. If the speed of the stream is 2 km/h, find the speed of the boat in still water.

Important Questions on Problem Solving

MEDIUM
7th ICSE
IMPORTANT
Maths Hub (ICSE)>Chapter 19 - Problem Solving>Check Point>Q 5
Can you think of a two-digit number such that the sum of the number obtained by reversing the order of digits is 165 and the digits differ by 3
HARD
7th ICSE
IMPORTANT
Maths Hub (ICSE)>Chapter 19 - Problem Solving>Check Point>Q 6
Students of a class are made to stand in rows. If 3 students are extra in a row, there would be 1 row less. If 3 students are less in a row, there would be 2 more rows. Find the number of students in the class.
HARD
7th ICSE
IMPORTANT
Maths Hub (ICSE)>Chapter 19 - Problem Solving>Check Point>Q 7
In a competitive examination, one mark is awarded for every correct answer and 12 mark is deducted for every wrong answer. Jayanti answered 120 question and got 90 marks. How many questions did she answer correctly?
HARD
7th ICSE
IMPORTANT
Maths Hub (ICSE)>Chapter 19 - Problem Solving>Check Point>Q 8
Chethan is reading a book which has 303 pages. How many times does the digit 3 gets printed in the page numbers? How many pages are there which have only one 3 present?
MEDIUM
7th ICSE
IMPORTANT
Maths Hub (ICSE)>Chapter 19 - Problem Solving>Check Point>Q 9
How many 3-digit even numbers can be formed from the digits 1,2,3,4,5,6 if the digits can be repeated?
MEDIUM
7th ICSE
IMPORTANT
Maths Hub (ICSE)>Chapter 19 - Problem Solving>Check Point>Q 10
Sajda spends ₹878 to buy pens and notebooks. Each notebook costs ₹41 and each pen costs ₹39. If she bought a total of 22 items, how many notebooks and how many pens did she buy?