Anyway,I have another questions
1.On the M53 is a sign 'Warrington 20'. Just over half a mile further on is another sign
'Warrington 19'.
This is not really surprising, since the distances are rounded to the nearest whole number of miles e.g. numbers of 4.5 and over but less than 5 become 5,
numbers of 4 and over but less than 4.5 become 4. Half a mile futher along
The distance to Warrington must now be between
A 17.5 miles and 17.6 miles
B 17.6 miles and 18.0 miles
C 18.0 miles and 18.2 miles
D 18.2 miles and 18.4 miles
E 18.4 miles and 18.5 miles
The answer given is E.Do not understand why the difference is 0.1miles.Shouldn't it be 1 miles?In my understanding,0.5 miles is the largest diffence between two signs,aren't three signs and two difference means 1 miles?
2.My mother still makes tea with the old saying:
"one spoon per person and one for the pot".
We used to buy a packet of tea every week but since grandmother came to live with us
we have to buy two packets every fifth week and one otherwise.
How many people were at home before grandmother arrived?
A 4
B 5
C 6
D 9
E 11
Do not know how to start with......
3.Three lighthouses are visible from the promenade at Rivermouth. One flashes every 1?
minutes, another flashes every 2 minutes, and the third flashes every 50 seconds.
All three have just flashed at the same time.
How long will it be before they all flash at the same time again?
A 6.0 minutes
B 7.5 minutes
C 10.0 minutes
D 30.0 minutes
E 150.0 minutes
Do not unbderstand the question-what is mean by before they all flash at the same time again?