books about problem solving

Zelma solved 180 problems from a math book in 6 days. Find the average number of problems she solved per day. => 42 or 24 or 36 or 30..

Charlie earned $10 from his job last week. He wants to buy some books costing $3 each and also save $1 for himself. Solve the equation, 1 + 3 y = 10, to find y , the number of books Charlie can buy. Use algebra tiles. => 2 or 3 or 5 or 7..

Uncle Francis gave $ D to Edward & Paul as a gift to be shared equally. Edward buys a book worth $20 and is still left with $80 worth of his share. Solve the equation D 2 - 20 = 80 to find Uncle Francis's gift value. => $300 or $200 or $250 or $350..

The bar graph shows the price of books on different subjects in a book store. Find the price range of books in the book store. => 4 or 3 or 5 or 2..

Botanical survey of India publishes this book. This book provides information about plant species which are rare, endangered or endemic, but all of which are grown in botanical garden..

Which is the best estimate of the length of a book? => 25 m or 25 km or 25 mm or 25 cm..

It is published by IUCN, to provide information about threatened species of plants and animal..

Solve => 87 or 77 or 67..

Solve => 21 or 20 or 2..

Solve => 4 or 11 or 2..