Total number of guests = 16
Solution:
Number of pizzas the caterer usually makes = 4
Number of pizzas the caterer make for a large party = twice of 4
= 2 × 4
= 8
So,the caterer makes 8 pizzas for a large party.
Quantity of pizza eat by each guest =
of a pizza
Let the number of guests be taken as x.
Total guest in the party
= Total number of pizzas ÷ Amount of pizza eat by each guest.
⇒ 
Division changed into multiplication when the digit of the denominator is reversed.
⇒ 
⇒ x = 16
Hence pizzas served for 16 guests.
1 meter is 100 cm so that means 70 cm is 70% of a meter
X=3.8
Sin41/2.5 = sin90/x
Sin90 x 2.5 = sin41 x X
Sin90 x 2.5/ sin41
X=3.8