Related Questions

A chemist was preparing a solution that should have included 401 milligrams of chemical . If she actually used 41.8 milligrams, what was her percentage error ?
A 0.045%
B 0.45%
C 4.50%
D 3.85%
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr, then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her office 4 minutes early. What is the distance in km between Rehana's house and her office?
A 10.5
B 11.2
C 11.5
D 12.2
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her 4 minutes early. What is the distance in km between Rehana's house and her office?
A 10
B 11.2
C 11.5
D 12
A woman while shopping in a mall pushes her trolley 20 metres through an alley which is going East, then she turns to her left and walks 30 metres, then she turns West and walks another 30 metres, then she turns South and walks 30 metres and then she turns West and walks 25 metres. Where is she now with reference to her starting position?
A 35 metres West
B 5 metres West
C 35 metres East
D 5 metres East
দুটি সংখ্যার অনুপাত ৪ঃ৭ প্রত্যেকটির সাথে ৪ যোগ করলে তাদের অনুপাত দাঁড়ায় ৩ঃ৫; ছোট সংখ্যাটি কত?
A ৩২
B ৫৬
C ৩৬
D ৬০
কঃখ =৩ঃ৫, খঃগ =৪ঃ৭, হলে, কঃগ = কত?
A ১০ঃ৩০
B ১২ঃ৩৫
C ১০ঃ৩৫
D ১০ঃ৩৪
তিনজনের মধ্যে ৭৫০ টাকা ৩ঃ৫ অনুপাতে ভাগ করে দিলে ভাগের টাকার অংশগুলো হবে-
A ১২০, ২৩০, ৪০০
B ১৩০, ২৮০, ৩৪০
C ১৫০, ২৫০, ৩৫০
D ২০০, ২৫০, ৩০০
Mrs. Jansen recently moved to Arizona. She wants to fill her new backyard with flowering plants. Although she is an experienced gardener, she isn't very well-versed in what plants will do well in the Arizona climate. Also, there is a big tree in her backyard making for shady conditions and she isn't sure what plants will thrive without much direct sunlight. Her favorite gardening catalog offers several backyard seed packages. Which one should Mrs. Jansen choose?
A The Rainbow Collection is ideal for North-east gardens. It includes a variety of colorful perennials that thrive in cool, moist conditions.
B The Greenhouse Collection will blossom year after year if planted in brightly lit locations and watered regularly.
C The Treehouse Collection will provide lush green plants with delicate colorful flowers that thrive in shady and partially shady locations.
D The Oasis Collection includes a variety of perennials that thrive in dry climates and bright sunlight.
Erin is twelve years old. For three years, she has been asking her parents for a dog. Her parents have told her that they believe a dog would not be happy in an apartment, but they have given her permission to have a bird. Erin has not yet decided what kind of bird she would like to have.
A Erin's parents like birds better than they like dogs.
B Erin does not like birds.
C Erin and her parents live in an apartment.
D Erin and her parents would like to move.
Sumi walks to her office at the rate of 4 miles per hour. If she increases her walking speed by 1 mile per hour , she would reach her office half an hour earlier than the previous time. What is the distance in miles of her office from her house ?
A 10
B 12
C 16
D 20

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