In a sale a clothes shop reduces its price by 40%.a shirt usually costs £20 how much is it in sale

Do 10% first, and then times it by four, so 10% is £2 times 4 is £8, take it away from £20 is £12. Hope it helps

I've made a table which may help to explain.
   in %|£ percentage| Pounds
   100 | 20                               Given that 100% of the original price is 20 pounds
     10 | 2                                  You should be able to subtract £8 from the £20
    40 | 8
                     Finally giving you £12 for the shirt during the sale.

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )