Practice Questions Flashcards
Regularly practice exam questions.
A company stocks 240 different products.
It stocks the products in the ratio
new : existing : clearance
3 : 2 : 1
Laypin thinks it stocks 117 new products are they correct?
Add all the ratios up 3+2+1 = 6
Then divide the total number of products by 6.
240 ÷ 6 = 40
new products have 3 parts of the ratio
1 part = 40 so new products = 3x40 = 120
Laypin is incorrect as there are 3 more than 117.
What is the formula for speed?
Speed = Distance÷Time
Distance = Speed x Time
Time = Distance ÷ Speed
What does mph stand for?
miles per hour ( how many miles travelled in one hour)
The Lawson family live 65 miles from a safari park.
They will leave the park at 3.30pm.
The average speed of the journey home will be 50 mph
They need to arrive home by 4.45 pm.
Calculate whether or not they will arrive on time.
Time: 3.30 - 4.45 = 1 hour 15 mins = 1.25 hours
( 15mins is a 1/4 of an hour 1/4 as a decimal is 0.25)
Time = Distance ÷ Speed
Time = 65 ÷ 50 = 1.3 hours. (1.3 x 60 = 78 minutes)
The journey takes 1 hour and 18 minutse
They will be 3 minutes late.
they will not get there on time 0.3 x 60 = 18 mins
